I've started kayaking on local creeks and have already encountered a 5'-6' alligator. A lightweight kit gun could come in handy. Gator hunters often use .22LR, so I guess technically my Keltec P17 would work. A heavier caliber would mean a heavier gun, so I think .22 WMR or .32 H&R would be the limit of what I'd want to shoot in a featherweight gun. Weight matters in case I go in the water - even with a life jacket I don't want a boat anchor of a gun on me.