I am about to be the proud owner of a Spring Creek Pram, model 8ft Hopper II. The last thing I want to do is to spend time caulking this fiberglass pram because I have to drag it across rocks to get it in the water. That said, what are the preferences for wheels/caddies that make good, reliable options. I have dealt with the pump-up wheel type caddy that straps to the bottom of the boat which I found a pain in the neck. I am leaning toward retractable wheels but have heard the stories about wheels that are worthless. Tell me your thoughts.