I just bought a 1648 weldbuilt Im running a 18hp sd on Im wanting to add a gun box along the left side and come off the center of my back bench seat with an angle over to the right side for me to sit on.. Well Im thinking of taking the middle bench seat out so I dont gain any extra weight but I was wandering will this cause the boat to flex??

Just ad 2 more ribs where you took the seat out yea I think It would fle.

kevin shoot me a pm with your cell # I have pics of what the ribs look like on a weldbilt..