I was entering my '04 green Forester. I had my ChuckIt * in hand and it smacked the door about waist high. It left about a 1cm scratch through to white primer? below.
Now, although a tennis ball was in place (increasing the momentum) it did NOT impact very hard, really closer to a tap the a hard hit. The type of impact that would not be painful if it hit your body or your head. Furthermore, it's only made of medium hard plastic, so I was rather shocked at how easily it scratched the paint. The only other explanation I can come up with is that the back of the ball cup which hit the door is a bit scratched up, and maybe it had a speck of hard "dirt" on it.
Anyway, any opinions about Subaru paint?
Pete