I have a 1990 Regal 233 Xl Ambassador Cabin Cruiser. I store it outside and cover it completely with a good water proof boat cover. The cover goes around the 2' tall pulpit / bow rails in the front and over the rear deck rails. I used 2 inflatable exercise balls in the front to form a inverted Vee and I used an adjustable pole in the rear deck. Proberm is, is when the cover gets wet it forms pockets and when it rains hard or snows it forms very deep pockets. I had to go out several times last winter and bucket the snow and water off. I was thinking this year to use 1/4" plywood over the bow rails and stick 2x4's underneath for support and the same for rear deck, this way the cover would not dip. So far, water has not entered the boat, the cover is very flexible and can hold large pockets of water. I strap the cover with 6 adjustable straps on each side, 2 on the bow and 2 on the transom, and adjust the frequently.
Any suggestion on what to do??????????