We have lots of customers with Bayliners so it's no problem to add one. All tower companies that focus on the aftermarket have lots of customers with Bayliners so there are many out there.
Do plan on reinforcing the deck under where you are going to mount the bases. You can add fiberglass to build it up or if it's flat it that area it's a lot easier to use something like 3M 5200 Marine adhesive and add wood underneath.
Have your husband look through our instructions at
http://www.monstertower.com/support.html There is a great list of all the tower builders at
http://www.worldwakeboardcouncil.com/links.html and you may find some additional manuals to give you some ideas as well.
If we can help give us a call at 877-77-Tower