If the bellyband fits properly it should stay on without a problem. 107barnery who is a member on YT makes wonderful bellybands. I've purchased them for Dude and they are custom fit and have a liner that goes inside to help absorb any marking. I have also used them on a rescue and there were no issues with him pulling it off.
here's the link
Washable Belly Bands by T. Bumpkins & Co. and Doggie Pee Pads