I have a Simpson 3" webbing 5-point harness and for my birthday, instead of going out to eat, my parent's are going to by me a new driver's seat. (I'm using towels to keep my butt above the seat rails!) I go into deep water a LOT and into some nasty mud too, so it needs to be a waterproof seat and resist stains and mildewing. Also needs to have the holes for the shoulder belts to pass though. How should I go about mounting the 5-point harness? Weld reinforcing plates under the floorboards or just use large washers or...? Thanks a lot everyone, and safe Jeeping to you all!