An ex coworker and I wanted to build a trebuchet that could launch people. strap it to an old pontoon boat, and head to the lake with it. In the end we decided it would end up killing someone.
There is probably a YouTube video of that. No telling what people are up to these days...
I like the trebouchet that launches the car about 200 meters. That should get your boat from beach to water pretty quickly... what condition it arrives would be unknown, however.
