I've been hearing a cracking sound coming from the rudder while underway and upon investigation have found a 3 inch crack in the fiberglass surrounding where the rudder tube comes through the hull itself. No water leaks so far. Browsing the forums it looks as if the temporary solution is to cover it with more fiberglass, or epoxy. Is this a viable solution to get me through the season? If so, what exactly should I use? I also have a picture if it will help.