the 14 tdb is a flat bottom hull that was added on. is it screwed and glassed in place, than leave it on it will help your turning if it is done right . I have owned 2 14 ft tdbs and they slide every turn you make the faster you go the more slide you get good luck with your new boat also i have a stainless set of selves for a 14 tdb custom made your welcome to have im in eastern pa pm if you want them