Drag Boats? If you haven't seen them, it's well worth the effort. The Fuel classes are very small in number of entries, but still, worth at least one road trip just to check that Nitro box off. They're a lot less forgiving than cars when it comes to being out of shape or parts breakage in the drive train or steering. Scary sport, but quite an eyeful. Look up Lucas Oil Drag Boat Series and see if they come close enough to you to go see. There's independent races as well. Coming to Texas for the first time back in the mid 2000's gave me the first taste, and I loved it. They televise them on MAVTV and very rarely on other channels if you can't make it to the water.