My LDC has an intro to tech, (adv. nitrox deep) course that I am considering, however the instructor said there were some timed skills that needed to be done and that it was unlikely that someone new to doubles could pass it. the doubles class is about $300. seems like a lot of money to put some doubles on and swim about in a pool.
Would I be safe putting $300 into a set of doubles (+some I expect). and learning to swim about with them at the local quary? is there anyting about using doubles that is unsafe in their own right, assuming I can remember to turn them on, and get my weight right in 5ft water before jumping off a boat? I assume there is some skill to be learned with turning one on and the other off while at some depth, and then turning the other one on and using the other regulator etc. but I assume this I could learn without the class.
Would I be safe putting $300 into a set of doubles (+some I expect). and learning to swim about with them at the local quary? is there anyting about using doubles that is unsafe in their own right, assuming I can remember to turn them on, and get my weight right in 5ft water before jumping off a boat? I assume there is some skill to be learned with turning one on and the other off while at some depth, and then turning the other one on and using the other regulator etc. but I assume this I could learn without the class.