Keeping water from comming up the drains

[willy]

pick up a set of toggle type garber plugs like you would use in the transom. put them in when you are out and about, right into the floor drains. just remember to pull them out when running in rough water bad conditions et so your boat stays a self bailing hull. tie a bright orange string to them so you won't forget them when you are leaving the boat in the water at the marina etc. it needs to be able to get rid of rain water etc.