I know that everyone hates plastic bedliners because TCs can't take a bite on them. If I wanted to retain mine due to the protection it provides, what would be wrong with either gluing or using aluminum rivets to hold a rubber mat over it?

welcome to irv2... another idea for you...put in a spray in bedliner they work great

Let me also welcome you to irv2! The thing I don't like about the slide in liners is that they sweat and can rust the bed;as happened in a truck I installed one in. I would agree with Jack and go with a spray in liner. Mine is an 'Ultimate Liner". I don't think there is much difference between the brands, but the knowledge and skill of the installer is important.

'Beannachtam na Feile Padraig!'(Happy St. Patricks Day!)

It seems like I read somewhere not to use spray in liners with slide ins. Obviously that's wrong unless there are certain types that destroy the camper?

Some folks use a sheet of "blue foam" between the TC and plastic bed liner.

Where might I learn more about "blue foam"?

Home building supply store. It is used during new home construction over the studs. They make it in several different thicknesses. Sometimes folks have to use it to raise the height of the cab-over when they buy a new truck, etc. I've seen different colors such as pink. I don't think that I would use the white pilled "styrofoam".

Well, the official word from Lance is that, in addition to the camper sliding off the plastic bedliner, they are concerned more about the bedliner itself sliding out. They think that if one were secured to the truck well, and if a good rubber mat was used between, things should be OK.

We'll see if this setup works this weekend. :|

I removed my bedliner and stored it for replacement when I go to resell the truck. In its place a purchased a heavy duty rubber bed mat from a local 4x4 retail outlet. I haul cargo in my truck and have never had a problem with any load, cargo or camper shifting on me and it protects the bed. I did put a self tapping screw centered at the head of the bed to hold position when empty. It also allows me to lift it and hose out the bed without removing the mat. These bed mats are very heavy and you don't want to be lifting them any more than necessary.
Hope this helps.

Thanks for the info.
I have retained my plastic liner, secured in the front with 4 bolts, tucked under the truck gunnels down the side, and 5 self tapping metal screws at the end. Hopefully this will hold it well enough against any shear it feels. On top of it is a rubber bed mat to take a bite. Not too concerned w/ the rust/corrosion issues in the bed here in NV.