Being on Lake Michigan, which I remember as being tempermental, I would carry a self-inflating all-weather liferaft. It stows away handy and relatively small, just grab, toss-n-pull on line. Actually, with a C22 you wouldn't have to launch the raft, just inflate it in the cockpit. When a Cat goes down it usually gets swamped under you, if you left the companionway wide open. Keep the raft in the cockpit storage locker, unlocked, so you can get to it when you need it.