I'm brand new to quilting on a rack. I had taken one short training and rented time on a long arm at my LQS a few years ago, and the pinning process was not enjoyable for me. Not to mention the fact that I kept getting poked, and my clothes were catching on all of the pins too. So I asked for advice here and the Red Snappers were recommended. I did end up purchasing them, and I *reallyreallyreally* love them! It's so easy to snap a quilt on and off, takes hardly any time at all. They are a slight bit stiff but even after only a few uses, they've become much more manageable. I do not have strong hands, and I've not needed my husband's help at all to get them on. Pulling off is really easy.
As far as the unquilted part, you can kind of manage it. I've only done practice pieces so far (since I'm brand new to my system) but I've been floating the top so I can decide what I want to do with it. I do add a few pins there to keep things taught until I baste. Not sure if that's the right procedure or not (brand new!!) but it works for me.
Hope that helps!