I'll drink to that one!

I got one for long distance bicycling. I did my first century (150 mile ride) with one. Had no previous long rides. Man, that water bag gave me new legs.

Try some of the stuff they have in Bike shops to give some taste and energy to the water. If you choose the mixes carefully, you won't glow in the dark or anything!

I like the idea of attaching it to the lifejacket, as long as it won't make you go face down if you land in the water. Maybe put it on the front? (I realize it would be less convenient)