Quoted from CrazyLevi:"a solid shove" to save a ball is not abuse.
Smacking the sides of a game during play isn't abuse.
Shaking a game to free a stuck ball isn't abuse.
None of the above is going to cause any damage to a game.
You know abuse when you see it. At a show I don't think you should be lifting a game off it's feet, or shaking a game so hard the backbox rattles back and forth. I didn't see ANY behavior all weekend in tournament or free play areas that would qualify as this kind of abuse.
I agree with this statement 100%
I didn't see any abuse this weekend, either. I'm not discounting that it could have happened, but everyone I spoke with agreed.
The funny thing about nudging and slapping, is that most casuals don't realize you can (and should) do it if you want to play better.
I play on location at a few small breweries around my house that have machines, and people will often say "you can do that?!?" I always say "absolutely!", and leave it at that without explaining that you can influence the movement of the ball or the surface in which it is rolling with a well timed nudge or slap. They think it's some type of black magic or something, lol.