It must be me... I hate the way it looks. Perhaps a just a little is ok, but I hate the way it looks when plastered all over a boat. Too many lines, spaces, etc.
I can't see it being easier to keep clean on a fishing boat.
For a non fishing boat, looking for comfort, maybe it's ok. Me, I'd go with snap-in marine carpet.
I ABSOLUTELY hate the thought of having to remove something that was glued down.
Now, if we are talking about it as an option for making an old deck look better, then I think that's a different discussion.
Again, it's just my opinion.