In the case of what Sportz just mentioned, I think the best thing to do is add a second selection, but state that it is an emergency. You could thereotically put as many emergencies as you like. This will stop that problem, because otherwise someone who is leading could put in one selection, who perhaps could ALREADY be scratched, and bypass the no tips rule. I don't think people would actually do that, but just in case.

Otherwise, yes if you only have one selection and neglect to have any emergencies and your selection is scratched, ten big ones goes the negative!!

PS - I am subject to that. I have often had to post on the Friday, so the rule is no advantage to me...