Cabelas has a CO-2 activated lfe jacket called Sospenders that comes in two different models, manual or automatic. the manual you have to pull the cord to activate. The auto activates when it is submerged which could be helpfull if you hit your head before pulling the cord. I've been borrowing my buddies till I get the money to buy my own. A little spendy but well worth the price. It is light weight and uncumberson. I don't even know I'm wearing it. And I don't care if someone sees me wearing it.