Where are the snaps located? (e.g. Floor? Ceiling? along a bulkhead?) How many snaps are we talking about? Are they in a line or a cluster? Maybe a pic would be better.
I have tie backs for privacy curtains. I also have marine vinyl 'screen' that covers the inside of the hatch for privacy that snaps in around the clear plexy cabin hatch. The privacy screens in the berths also snap to hold them closed as well. IS it possibly one of these?