Free tool · No email required
Speargun accuracy diagnostic.
Ten minutes of questions. Narrows your accuracy problem to one of six root causes, each with the fix, the Rob Allen video that explains it, and the replacement part if you need one. Built on Rob Allen's six-part accuracy series.
About this diagnostic
Every question, every root cause, and every fix in this tool is drawn from Rob Allen's own six-part "Why is my speargun INACCURATE" series, published 2025. The logic is Rob's. The part-number cross-referencing is mine, matched to what I stock in Thailand.
If you want to watch the full series end-to-end, it's on the official Rob Allen YouTube channel.
If the diagnosis points at a part that's out of stock or you want a second opinion on your setup, WhatsApp me directly — faster than any diagnostic.
Sister brand · Apnea Total
Run by Diego PauelOnce the gear's right, work on your dive.
Accuracy in the pool is one thing. Accuracy at 15 metres with your heart rate up is another. Freediving Koh Samui trains the diver behind the gun.
Discovery Freediving
7,500 THB2 days · No certification. Try before you commit.
Theory, breathing, and two open-water sessions at Sail Rock. Same training as the Beginner Course without the certification day.
Fit for: First timers curious about going deeper than a snorkel breath.
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Beginner Freediving Course
from 9,500 THB3 days · Apnea Total Level 1 certification.
The foundation every spearo should have. Duck diving, equalisation, open-water safety, rescues. Train at Sail Rock and Koh Tao. Max 3 students.
Fit for: Spearos who want a real certification before hunting deeper than 10 m.
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Advanced Freediving Course
from 12,000 THB3 days · Apnea Total Level 2 certification.
Frenzel mastery, exhale dives, depth training past 20 m. For spearos who want to hunt the thermocline and below.
Fit for: Certified Level 1 divers ready to progress past 20 m.
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Static Apnea Clinic
Message for pricing1 day, on request · No certification. Pure breath-hold training.
Focused on extending static apnea through CO2 tolerance drills, O2 adaptation, and mental protocols. The real-world sibling of the Breath-Hold Trainer tool on this page.
Fit for: Spearos whose shot window is capped by breath-hold, not dive skill.
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Fun Dives & Coaching
4,500 THB / personHalf day · No certification. Continuing education.
Refresher sessions, personal best attempts, private coaching for certified divers already comfortable in the water.
Fit for: Alumni of Level 1 or 2 who want in-water coaching without signing up for another course.
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Spearfishing Trip
from 35,000 THBFull day · Guided trip. Bring your own gear or rent ours.
Full-day spearfishing trip to legal Gulf of Thailand waters, led by Diego. Max 2 guests. Same operator as this shop.
Fit for: Anyone with the gear who wants to hunt in legal waters outside the marine parks.
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