The Allison type foils are pretty solid and do make for a flatter holeshot. The configuration has no effect on speed or running performance. It’s completely out of the water above low speeds. Search Bryan’s Foils on BBC in the Bullet Boats forum. I really like mine. I load heavy to the rear to minimize load speed loss. The plate gives me a flatter, quicker launch, and keeps me planed at much lower speeds. The shape doesn’t effect how water comes off the prop, so no top speed impact at all.