I have deviated from Renn Tolman's design by adding a 1"x1/4" mahogany keelson strip which in turn will be covered by a 1' x 3/4" UHMW rub strip. The hull was leveled and faired to accommodate this strip, and then the strip and the hull will be faired with a fillet.
My intention is to have a sacrificial zone in which to attach the UHMW with screws and bedding compound. If (when) I take a hit, I hope to limit damage this area and keep moisture from intruding via the screws securing the rub strip. At least that's my Working Theory.