Do you have a bilge pump in the boat?
I know its a small boat, but if not, this would be a good time to consider installing one.
You can get both battery powered or manually powered bilge pumps.
Options:
A portable hand pump like this Beckson Thirsty Mate (around $25):
A fixed mount hand pump such as a Bosworth Guzzler 400H (around $40 plus the cost of a thru-hull fitting):
A electrically powered bilge pump; but requires a car type battery if you have the room (about $50, plus the cost of plumbing in a thru-hull fitting and battery).