Hello,<br /><br />I have recently gotten through a long waiting list for a slip at my local (unguarded) marina. Now I have anxiety about jerk-proofing my boat. It's an older hull Whaler and not pretty, so what I worry about the most is the 3 year-old 40hp Suzuki. Does anyone know if those spinning nut type items offered by McGard.com are any good at detering thieves? Any experiences or other suggestions?<br /><br />Thanks,<br /><br />Nigel