How about using a large CamelBak to carry your bee... I mean apple juice in? That way you can be on the wire and get hammered... I mean juiced at the same time. I'd recommend the Delta-5 Tactical Vest. It's designed for high-speed tactical environments.

For you long distance racers that may have to beach in a hostile environment, consider the Demon. It has a hydration bladder and a concealment pocket for a handgun, single or double stack magazine and either a tactical light or a folding knife.

Serious stuff for serious sailors!

http://www.camelbak.com/index.cfm