Most competition ski and wakeboard boats, as well as more expensive boat brands like Sea Ray and Cobalt, have decks which are at least 3/8" thick and do not need to be reinforced. If your deck is thinner than 3/8" you should reinforce it with additional fiberglass to build it up to 3/8". Fiberglass kits are available at many online stores including www.WestMarine.com, www.iboats.com in addition to local boat supply companies. Some of our customers have added a 1/4" or 3/8" piece of plywood under the deck attached with 3M Model 5200 Marine adhesive and then covered this with fiberglass. This is the best possible solution as it adds significant strength for the mounting location. This would be recommended for Bayliner, and similar brands where the fiberglass thickness may be closer to 1/4" or 3/16" thick.