They varied from the beautifully designed and crafted to Heath Robinson concoctions of string and elastic bands; from the straightforward to the wonderfully eccentric.
Joe Rutland made a return appearance with last year's winner, Velociraptor, to triumph once again. I just love the design values of this boat, simple wooden parts bringing four cordless drills into a recognisable 'four cylinder' engine.
The other contenders were largely based on long thin kayaks, but my favourites were clearly there for fun rather than any serious hope of winning (though the prize, two top-of-the-range Makita cordless drills) was certainly worth having.
One guy had a cordless drill in each hand and one mounted on the transom, switched on by pulling a string run over his shoulder and round his foot.
Another had created a wonderful detachable sidecar for his classic bike. Complete with a properly salty wheel. Left hand down a bit, Mr Mate!
At the prizegiving, Joe Rutland extremely generously asked that his prize be distributed among the runners-up instead, as he had won last year.
Joe is about to offer a pedal-powered version of Velociraptor for sale - see his website here.