Rob, i been thinking ( always a dangerous thing to do, but.....)
In Italy there were, as you know some targets which were placed in such a way as to make them practically useless,
but because they had already been shot at and no-one had said a thing until well into the shoot, nothing could be done.
So, to get to the point, could you print up an e-mail and send it to all RGB'S stating that when everyone gets to their first lane and see an illegal/unshootable target, that they must immediately tell the marshal/chief Marshal and have it Fixed before Shooting Commences.
If everyone does this, it will highlight and make known every problem at the start on day one, unlike in italy