We had this system on our previous Triton with a Soplair awning. I found the clipping of the curtains to be fiddly and irritating so I made an alternative system.
I took the curtains and made a sleeve at the top (they were still long enough to cover the plastic window) purchased some slender telescopic rods to slide them onto and sewed loops of thick elastic to the webbing that the curtains were designed to suspend from , one at each end and one in the middle.
Slide rod through central loop, slide curtains onto rods slip end of rods into elastic loops - done in about 20 seconds.
Denise