I just lost my drift boat (RO Drift 15") and will be converting a Lowe 16' V-hull from motor powered to oars. I'm concerned about the draft depth. If I cut down the sides of the gunnels 18", how much displacement will I have? I plan to reinforce the sides with crossbar platforms for casting. Will reducing the sides, lessen the weight? What about stability? Any ideas or anyone out there who's done this before? Thanks....M