On removing bots worse than SittingDuck

There are also some bots that try to do as badly as possible, so do worse than SittingDuck by not getting survival bonus etc.

WoW that's amazing

Now I'm considering a new bot that ranks the last in the rumble. aaa.WorstBot. I think I can use ReversedWaveSurfing to make sure the enemy hit me 100%, and when he is not firing or ramming, go hit the wall and hit and hit and hit the wall, while avoiding ramming into the opponent accidentally.

The reversed rumble is as interesting as the normal one, I think we should permit this.