snorkel?
If you are thinking of using a snorkle, either you have very long arms, or you might just forgo that and hold your breath...cause that's what you will be doing anyway. A snorkle will just get your face in the water.Are you maybe thinking of those units that pump air from the surface for underwater diving?I don't think it is a very good idea to free dive your repairs. First, you probably need a little bit of weight added to keep you from floating up while working, a lot of weight if you are using a heavier wet suit, so you need to know how to balance it and release it. Second, and more important, if you get hung up on something while holding your breath, you will not have much time to work your way out of it.Dan Jonas (S/V Feije II)