KB, thanks for the info. Our RV was in storage and I was going from memory so, as I am, the worse case scenarios popped into my mind. Couldn't find the stainless steel ties and the 14" ones I have weren't quite long to give me much room to work. Had to buy 24" (much wider than I wanted and nothing in between in the store) and they just fell through the holes. So now at the last minute, we're leaving the a couple of days for three week trip, I decide this has to be done.
At least I can travel feeling better about the covers and will order bolt ones when we get home.
Thanks again to every one.