I ran my new to me motor today solo and GPS'd the top speed. 1980 Johnson 15hp, stock 9.5x10 prop on a 14' Hewescraft semi-v. Has 3/4" plywood low decks, was carrying 4gal fuel, 2 anchors and not much else. Ran best with the trim pin closest to the transom, no hydrofoil. Cav plate dead nuts even...