i have a 1978 monark makfast 15 with a horizonal crack on the transom above the drain plug and stress cracks on both side of the splash well . i have a 94 yamaha 130 on it now , but the transom hardly moves while running or out of the water. last outing i did notice the builge pump turning on and running for about 30 seconds looks like i am in for a long next weekend . thinking about using seacast any help would be taken to heart