Started my re-flooring project of a 18 1/2 foot 1986 Sunbird bow-rider I/O. I cut most of my floor out to determine the extent of the damage. All the floor is rotten. Stringers and sub-structure are good. I shored up the hull so I can pop the cap and re-do the whole floor. Do I need to remove my engine if the motor mounts and sub-structure are good? I have read a bit on re-flooring and know to keep an eye on the hull to keep it true. This is also why I got the boat off the trailer and shored her up. Would the motor and out drive put undue stress on the hull with the Cap removed? Thanks guys