If you’ve got a pair of these bags attached to the D-rings on one side of your raft, it’ll be a lot easier to get it back upright after a flip.

Nylon bags have ropes inside and a drawstring bottom.

After a flip, you yank the rope ends out of the bags, toss them over the bottom, swim around to the other side of the raft, and use your body weight to pull the raft back over toward you.