Tonneau Cover

I went through this search a couple of months ago. I ended up with an Undercover SE because my wife and I could unload it easily( it only weighs about 60 lbs), it could be stored without much effort, it left minimum interference in the bed when removed, it locked (and this included locking the tailgate), and it is very strong. It sounds, however, as if you are looking for a different style. We initially were looking for a retractable cover that would not interfere with the camper, was lockable, was strong, and we could carry with us for use when we unloaded the camper. Of course you have to be able to carry the tailgate to make it truly lockable, and you need to be able to lock the tailgate independently. The best we found was the Peragon cover. This looks like a good product(we have no association with the company). They were great to talk to and the price was reasonable with free shipping. It sticks inside of the bed sides but well within the wheel wells. The reason we did not purchase it was that the camper would have to set back about 2". We wanted to keep the camper as far forward as possible so went the other direction.