The EasyTroller trolling plate slows your boat down to as little as 1 mph for slow troll fishing. The EasyTroller&';s patented spring hinge design flexes upward to prevent damage to the trolling plate under accidental acceleration. The optional hydrofoil fins help to improve your hole shot and maintain a steady plane. Mounts directly to cavitation plate. snaps into position a few inches behind the prop. Releases with simple pull of cord. Fits most outboard and Inboard motors 30 HP and up. heavy-duty marine-grade anodized aluminum and stainless steel construction.1-Year warranty.