Thank you!

I didn't peek and ended up with the same solution as you, so for an extra bit of fun I tried to golf it to be as short as possible. There's probably room for much improvement: (94 chars)

setInterval("l=loopTapApp;b=l.getBallAngle();a=l.arc;b+6>a[0]&b-6<a[1]&&l.tap(new Event(1))")