Kiteboating can be fun as long as you know what you are doing and are prepared for what you will face. The SX Trainer and RX Trainer can help you get a better experience while kite-boating. The SX Trainer clips on the waist harness while the RX controller attaches directly to the both and can generate lots of power, depending on the conditions. Both of these allow steering and retrieval of a 2 line traction kite from your boat.
Kiteboating looks like a lot of fun. Just make sure you stay safe while trying it. This particular project is on Kickstarter.