Joe, I don't have snaps. My wife hates putting her arm on the boat and having a snap dig in. It also looks cleaner without the snaps. That means I don't have a bow cover and I could really use one. I just have not figured out a complete bow cover that does not snap. (But I will, someday)
I have seen a couple of custom covers that snapped on below the rub rail and they seemed really nice but it took a while to get the cover on.
My old I/O had snap on covers that worked very well. We do notice how nice it is without the snaps on the current boat.
Sorry if this post doesn't help much but it, maybe, explains some of the ideas.