This is a drawing of what i had in mind for shape because the smaller 25hp/30hp outboards have the lip on the transom clamps for the screws i would need that lip on the transom also
just a bit of info this was my cousin's boat he took it out twice in around 8 years on one of those occasion's i recall driving thru a 8 knot zone with 4 or 5 people on board and a huge glass cruzer came flying past us doing easy 60kph as i slowed down for the passing idiot i went to idle and the wake from this other boat almost swamped the rear right of this tinny so i think by adding the pod it should add some buoyancy and be a plus