Allthough people will hate it if we talked dutch, ill jump on the wagon, too.

Toffe slee! Als je trouwens een goed nederlands modelbouw forum wilt, www.modelbouwforum.nl

As for the fisher ship, I was playing with the thought of building a giant... hmm, how do you call it in english? Tacklefloat?
The motors I have, are housed in little aluminum watertight pods. And could be mounted on a swivelpoint on the side of a long tube, with a block of foam on 1 side of the pod, to make it aim flat on the water at all times. When a fish pulls, the long hull might pivot with one end upwards, with the motors still flat on the water, allowing me to still controll it i guess. Its a little radical and tricky, but with a little bit of thinking it might work.