i’ve got a factory cover on my WX2000T.
it fits nice and snug with the ratchet strap around the rub rail which essentially eliminates any flapping since wind isn’t getting in around the edges.
with one twist as mentioned earlier the side straps do no vibrate much and i haven’t seen any wear on them at the points where they go around the trailer beams. i appreciate the fact that there is a large padded piece of protective material behind the strap where it attaches to the cover as this is the place it is closest to the boat and most likely to flap/rub against the gel coat.
the only downsides are that it has crushed the cushioning out of my bump seat on the bow and it fits too tightly across the trolling motor cut-out. in the case of the trolling motor the pressue is pushing apart and starting to separate the cover of my Terrova. if i were to do it again i would get a cover without the cut-out and just remove my trolling motor from the quick mount whenever i put the cover on the boat.
the custom fit means that it sheds water without pooling on top. and it is exceptionally waterproof so i’ve not had any water in the boat while it was covered. overall, this is the best cover i’ve owned or even seen. for the price i highly recommend it.