Turbo Ice Sled (experimental)

The impeller don't drive the boats as fast as I wished. So I looked for another way to reach more speed.
An ice sled cause less viscous drag and indeed, it runs so fast that I hardly could control it. Full throttle was only possible for a few seconds. If you give throttle in curves it comes to an about-turn, though it is a perfect emergency break ;-)
Anyway, the indoor ice rink was far to small to make full speed, or I have a lot to train yet...
It is absolutely necessary to use the bumper