Journal
Field notes.
Gear guides, Thailand dive locations, legality explainers, and the occasional trip report. Written by Diego from Koh Samui.
Technique · 23 April 2026
Frenzel equalisation for spearos: the only technique that scales past 15 metres
Step-by-step guide to the Frenzel equalisation technique for spearfishing. Why it matters, how to learn it, and the drills that make it automatic.
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Technique · 23 April 2026
Ikijime and bleed-out: how to humanely dispatch a speared fish (and get better meat)
Humane fish dispatch for Thai spearos. How ikijime works, why it makes the meat measurably better, and the one tool every spearo should have on their belt.
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Gear · 23 April 2026
Storing Rob Allen rubbers and shafts in tropical humidity: the honest manual
Proper storage for Rob Allen speargun rubbers, shafts, line, and reels in Thai tropical humidity. How to make a 12-month rubber last 18 months and save money.
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Buying Guide · 23 April 2026
Grey-market Rob Allen in Thailand: the real cost of saving 1,500 THB
Why grey-market Rob Allen spearguns cost more than they save. Thai customs, warranty reality, and how to verify you're buying from the official distributor.
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Species · 22 April 2026
Cobia and queenfish in Thai waters: the mid-water surprise species
Cobia and queenfish spearfishing in Thailand — two opportunistic mid-water targets that reward a gun raised at the right moment. Where they show, shot placement, and why the 90cm Snapper handles both.
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Species · 22 April 2026
Dogtooth tuna spearfishing in Thailand: where, how, and with what gear
Real guide to dogtooth tuna spearfishing in Thai waters. Where to find them (and where you legally can), the gear that actually lands fish, and the brutal truth about dive depth.
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Species · 22 April 2026
Giant trevally spearfishing in Thailand: the reef's heaviest hitter
GT spearfishing tactics for Thai waters. Where they show up, how to position for the window, and the gear that actually handles a 15 kg fish on the reef edge.
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Species · 22 April 2026
Grouper hunting on Thai reefs: patience, precision, and which rock to read
Grouper spearfishing tactics for Thai reefs. Hole-hunting technique, shot placement on hard-skinned fish, and how to tell a 2 kg ambush from a 10 kg one from the water column.
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Guides · 22 April 2026
Gulf of Thailand spearfishing: Chumphon, Koh Tao, and the mainland coast
The honest guide to legal Gulf of Thailand spearfishing. Where to hunt, which months to plan for, what fish you'll actually see, and which marine parks to avoid.
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Technique · 22 April 2026
Snapper hole-hunting: the technique that fills Thai dinner tables
How to spear snapper on Thai reefs. Hole-reading, approach angles, and the gun setup that works on the 1-3 kg class that makes most dinners.
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Gear · 22 April 2026
Snapper vs Tuna rail: which Rob Allen speargun for Thai reefs?
Snapper vs Tuna rail compared for Thai conditions. Honest picks by use case, real THB pricing, and when each gun is actually the right call.
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Guides · 22 April 2026
Thailand spearfishing season: when is visibility actually best?
Honest month-by-month guide to spearfishing conditions in Thailand. Andaman vs Gulf, monsoon windows, and the myth of 'year-round' hunting in tropical water.
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Species · 22 April 2026
Wahoo spearfishing in the Andaman: fast, legal-limited, and rarely landed
Wahoo spearfishing tactics for Thai bluewater. Where they show up legally in the Andaman, how to read the current lines, and why most Thai spearos never get the shot.
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Gear · 22 April 2026
Wetsuit guide for tropical water: what actually works in Thailand
Thickness, open-cell vs lined, one-piece vs two-piece, camo vs plain. An honest wetsuit guide for spearfishing in Thai tropical water from the official Rob Allen distributor.
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Buying Guide · 20 April 2026
Buying a second-hand speargun in Thailand: the full checklist
Rob Allen's 2026 second-hand speargun guide, adapted for the Thai market. Red flags, component checks, and the warranty reality for grey-market guns.
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Gear · 14 April 2026
Squared barbs: 15% faster, 30% stronger — Rob Allen's 2025 update
Rob Allen's new squared-barb design gives 15% more spear velocity and tests stronger than radiused barbs. Thai reef + bluewater implications.
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Technique · 9 April 2026
Pencil point sharpening — Rob Allen's method for Thai reef species
Every missed reef shot rolls your spear tip. Rob Allen's 2024 pencil-point sharpening method, applied to the Thai species that dull tips fastest.
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Care · 3 April 2026
How to make latex rubbers last in Thai humidity
Thai heat, salt, and humidity destroy speargun rubbers fast. Here is the care routine that doubles rubber life, plus when to replace.
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Location · 29 March 2026
Spearfishing Phuket and the Similans: what to expect
An honest guide to spearfishing Phuket, the Andaman coast, and the Similans. Park closures, legal zones, realistic conditions, and what actually works.
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Gear Care · 23 March 2026
Your latex is losing power every week — here's the test
Rob Allen's 400% stretch decay test shows measurable rubber power loss within weeks. In Thai humidity, decay is faster. Swap schedule + storage protocol.
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Gear · 18 March 2026
Triple-band or double-band? Rob Allen's Transkei test, Thai translation
Rob Allen's 2024-25 triple band development. When the extra rubber is worth the loading effort for Thai bluewater targets.
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Location · 12 March 2026
Spearfishing Koh Samui: a local's guide
Where to spearfish on Koh Samui, which coasts work, visibility by season, target species, and how to get on the water. From a local, not a tourist.
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Gear · 6 March 2026
Rob Allen carbon rollers: when they're actually worth the money
Carbon roller spearguns cost 2 to 3 times a standard railgun. Here is the honest take on when they matter for Thai diving and when they are overkill.
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Gear · 1 March 2026
Aluminium, carbon, or Timberline: which barrel for Thai reef vs Similans bluewater
Rob Allen's 2024 deflection series measures barrel flex across three materials. Here's what the numbers mean for Thai reef hunting vs Andaman bluewater trips.
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Gear · 23 February 2026
The stainless steel lie: why your spearfishing shaft bends at 100kg
Rob Allen's 2023 load-cell test shows 316 stainless shafts bend permanently well before 100kg of pull. Spring steel holds past 180kg. Here is why it matters on Thai reefs.
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Legality · 18 February 2026
Is spearfishing legal in Thailand? The actual rules.
Spearfishing is legal in Thailand outside marine parks. Here are the real rules, protected zones, species guidance, and what enforcement actually looks like.
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Trust · 12 February 2026
Why buy Rob Allen gear in Thailand (and where from)
The Thai spearfishing market is full of grey-market listings and knock-offs. Here is how to buy genuine Rob Allen with warranty, and why it matters.
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Technique · 7 February 2026
Why your speargun is shooting low in Thailand (it's not the fish)
Six reasons a Rob Allen or any speargun suddenly stops hitting where you are aiming, pulled from Rob Allen's own 2025 accuracy series and field-tested on Thai reefs.
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Gear · 1 February 2026
Your first speargun in Thailand: a buyer's guide
Buying your first speargun in Thailand? Here is what actually matters, what to avoid, and how to size for Thai reef and Andaman conditions.
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