1. Is Cybrax' trick on Chemical Plant 2 allowed?
2. If yes, does this set the precedent for other Sonic + Tails tricks to follow - eg. Metropolis nut/bolt things?
Let's face it, abuse for score attack purposes is just too fiddly to be of use. All that is needed is a rule similar to that for Knuckles Chaotix (ie. Tails cannot be controlled by the player) and there should be no problems.