One more place to check: I had hull H-18 #301 and I ended up having both transoms leak because the joint of the transom and hull on the bottom was not heavy enough and after multiple rudder pop ups from hitting bottom they developed hairline cracks which only opened up under sailing conditions. Over time they increased, forcing me to cut inspection ports on the decks behind the cross bar, routering out the effected areas and reglassing. The repairs worked great for the years I owned it afterward. I am not sure if this weakness was just the boat I had, or because it was one of the first ones built. Also could have been I had the kick up adjusted a bit too tight. They are great boats and I hope you have a lot of fun with it this summer.