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Conor once bubbled...
Sorry to be pedantic, but.....
Yes you should be negative at the start of a dive, yes this is not the same as being overweighted but the 5lbs is only ever a guideline. The amount will vary dependant on air used (not tank size).
I would stick to my guns and say that if you aim to finish on not less than 50Bar then if you can hold 5m with this amount in your tank, then you are correctly weighted. At the start of the next dive you will be negative by the weight of the air you have over and above 50 bar.
Does this make sense ?
Sorry....its a tuesday
Conor
fgray1 once bubbled...
This is an add on class that will weight you properly. Not the basic class where you simlpy sit in pool shove some weight in your pocket decend to your eyes with the reg. in your mouth inhale and if you acend a little your weighted properly. You will consentrate on your decents and acents. As well as hovering of the bottem with as little movement as possible by inhaling and exhaling. Also teaches to be aware of how streamlined you are. It a specialty class.
In my opinion one of the best any diver can take.
Fred