[LeelandS]

I'm no referee, so someone else with more insight can come in and clear it up, but here is how I've generally seen it play out.

If you are in your loading zone, and drive up and tap the defending robot whilst you are still in the loading zone, it is a foul on them (you can see a similar circumstance from last year, where team's shooting from their alliance key would drive and tap defenders who got too close to get a foul on them). Even if you repeat it many times, you are not forcing them to get the penalty. They are repeatedly putting themselves in harm's way. Now, if you have one of your alliance partners hold them in place while you do it, the referees would probably call you for forcing the opponent to be penalized. But in the scenario you described, the opposing robot should receive a foul.

As for pushing a >60" robot into its zone to try and get it a foul for being too tall, I haven't seen this happen, so I can't tell you definitively how it would be called. I will say that the intent of the rule is most likely to prevent robots from using height to their advantage in their own zone. As such, I would bet that, were you to do this, the referees would either not penalize it, because you forced them all the way across the field, or even penalize you if you try it too many times. Pushing robots across the field every now and again can be used as a display of strength. If you do if often to an opposing robot, the referees will probably not be to keen on it.

That's just my take.