As we near the end of winter I must say that I'm fully impressed. We've had periods of heavy rain this winter and the bed stayed dry. During the Christmas season, I felt more than comfortable using my truck to run errands from store to store as the cover and the tailgate both lock.
The cover sits about an inch proud of the bed rails giving the user a little extra height in the bed for larger objects.
My cover came with the tailgate sealing kit. This is good for rain but it will freeze up when it's very cold and then the tail gate can't be easily opened. This is the only drawback thus far.
The cover is easily removable (about 30 seconds) and can be stored anywhere safe until it is needed again. I've hauled top soil and composte thus far and did remove the cover. I could have simply folded the cover up and left it in the bed where it belongs but I was afraid that the tractor operator damage it somehow with his bucket loader. No worries as it was easily re-installed in about a minute.
My neighbor has a backflip on his 2010 Lariat Screw and I will admit that I like the looks of his better, BUT, he likes the versatility of mine over his. In fact, he stated that he would have purchased the Peragon had he known about them. Backflip and some of the others happened to be better known than Peragon and typically are chosen first for that reason.
You cannot stage heavy objects on the Peragon cover, perhaps 100 lbs max before some damage may occur. Having been warned of this by Heath Copp, I never tested his advise.
No bed cover is going to increase MPG's by any noticeable amount. The cover's main function is appearance and security.
Mine was installed with a few days of the above.... been outside all winter now, still dry inside. Not any snow this year here in mid-Maryland but no reson it wouldn't be unlike my old cover from the same manufacturer. This new one just folds SOOOO much better than the original. Tip of the hat to Heath Copp and the movers and shakers at Peragon!
PS...I'd add my photos, but it would only be a duplicate of the above in Arizona Beige. Holding the deep black color much better than the original too!