I am not sure many people here realize the forces a wakeboarder can generate. When an average size rider tries to save a trick the entire boat can shudder, the tower will shake and the non stretch rope stretches. Many boats have the gel coat crack where the tower is attached to, and some like my Nautique with a Boss tower have the welds of the tower crack from the large forces at work. Fortunately the tower company covered it under warranty.
The load on the tower needs to be spread out, and the mounting points reinforced. Many towers have large backing plates mounted under the gunnels. In the floor you will need to get a way to access the bottom mounting section.
"The better you get, the higher you fly, the harder you fall".