what constitutes assist?

[tStano]

This is the best definition we have.

POSSESS: (for a ROBOT) to carry (move while supporting BALLS in or on the ROBOT), herd (repeated pushing or bumping), launch (impel BALLS to a desired location or direction), or trap (overt isolation or holding one or more BALLS against a FIELD element or ROBOT in an attempt to shield them) a BALL.

It seems to me that bouncing off would not be herding because it isn't 'repeated'. However, I think it may be considered launching, as long as your robot was positioned such that it would bounce it to a planned location.

I think this is worth a QA, but I bet the answer will be unhelpful.