I have an old clam, think its a “Fish Trap II” that must be 25 years old. It’s from a time Long before Hyfax. It has to have a couple thousand miles on it across anything & everything and there is just now starting to wear through slightly. Maybe the plastic was better back then, don’t really know. Several poles have been replaced and the tent many times, but the sled is good.
Not sure if the hyfax make it easier to pull, that would be the only reason for me to buy them.