Destroyer
God
Came across this in eBay.. Might be a nice way to stop water draining into the bilge.
Cheap too.
http://www.ebay.com/itm/MARINE-WHIT..._Accessories_Gear&hash=item3f16c7f642&vxp=mtr

http://www.ebay.com/itm/MARINE-WHIT..._Accessories_Gear&hash=item3f16c7f642&vxp=mtr