depends what your doing for example if your diveing in 6m of water for scollies then free dive would be the way to go dive grab a few come up measure dive again and grab a few more.... but if your diving in 15-20 a tank would give you more bottom time in less your a fantastic free diver most ove my mates that dive spear fish so strictly free dive my brother dose both spearfishing free diveing and scuba dives for crays (if its to deep for him to free dive)
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