Dave, Over the years I haven't found a fender hangar that I liked so we've just gotten in the habit of doing a couple of hitches with the fender line, running it around the bow rail. It's easy to put a slip knot in there so undoing them is a cinch. (OK, that was a bad pun)
I could do that, but I put out my fenders quite often (we docked 10 times yesterday) and wanted something quick and easy that could be operated one-handed. This is especially important with our upcoming cruise where we expect to lock through 60+ times (where we will likely be deploying fenders on both side of the boat) and will spend at least 10 nights in different transient slips.