Hi! welcome aboard Matee! I just purchased two removable boat plugs at any supply store or wally's. cheap! However; You will find that where the cord come in from the the keel.. I just stuff a little plastic shopping bag part way down it's shoot and that takes care if the water popping up.. You will stay nice and dry. Just remember to remove it at the end of your trips. What year is your vessel? and what motor do you have? Do you trailer it?When under outboard power we have some water coming up through self bailing ports. Anyone plug these in fair weather?