Boy do these look good on top of the engine cover! These are lightweight hand-laid fiberglass scoops that we designed that really work. You simply cut out the front of the scoop and mount it onto or from the under-side of your engine hatch cover, and they will provide plenty of air intake. We mold them in white GelCoat so they can be used out of the box, or painted to match your boat. A large flange is provided that can be trimmed or even removed depending on hoe you intened to mount the scoops, we will leave that up to you.