Ok, looks like my last edit was a thread killer, so I've made some more changes so the challenge can continue. See the post above for the new version. Either that or you're welcome to revert to the version before mine.
Bah, I give up for tonight. Those balls kept landing on or under my wire, but as I never knew which balls would land where, I didn't know how much wire I had to work with. I had the ball like 80% in the goal a few times, but baaaah.
Incidentally, any idea why I can't log in to the forum? It tells me I have a wrong password - I registered as Rob48 and I can't use that name as it is already registered (to me) so I have to make each post as a guest, very annoying!