I have had mine in 3 different trucks. The only time I take it out is to hose out the bed to remove dust or whatever got under there. It does flop around a little going through the car wash, but never really came close to coming out. If I had to worry about someone stealing it I'd find someplace else to live. I guess you could always bolt it down with some nylock nuts.
I feel that the location where I live will pose very little risk of someone taking it... but try to secure items as best possible for personal piece of mind. Old habits are hard to break... Heck, I still lock the truck/ camper even out in the middle of nowhere! As a kid I had a bike stolen... that feeling of loss and violation really sucked. I guess I have been securing things wherever possible since then.
I like the idea of using some type of nylock to hold it in place in the bed. Perhaps i will look to that direction for now.
BTW- the liner I have is not a rectangular one, it is the type that wraps around the wheel wells of the truck bed. I used to have one that was just 4x8 that sat right under the camper's base; it was easier to roll and remove... This one which takes the shape of the whole bed is a little more cumbersome to roll when removing.
Mine's just laying in the bed of the truck. Even in Memphis Tn it was still there. If it does not walk off in that city. Its good. Sure glad I don't live there. But with our Grand Son Spending so much time at St Jude's we have been there a lot of nights.
2004 Duramax/allison Trans C/C 4x4
2012 Landmark Key Largo
2008 Lund 1825 Pro Guide Tiller, With a Evinrude 90 HP E-Tec
I had thought when we 1st got our mat about attaching to bottom of camper..but due to its own weight figured would be problamatic at best. Not knowing how it would ride I also thought about screwing to bed floor-but never did. 11+ years its never blown out, It does walk a bit-always ends up tight against front of bed-I just pull down to ensure drain holes arent covered when loading camper. We also have some large eucalyptus trees that are always in the process of dropping somthing so occasionaly flip mat over to one side clean out debri, flip over to the side- if it were screwed be a pain. But I still dont trust when on the hiway and tail gate off-
Cant imagine someone stealing a bed mat-but IF I were to add something to hold mat-something that could easily be removed or allow mat to be removed without tools for cleaning be nice- as I could really use some floor mounted tie offs so something that could also be used for securing loads would make it practical. Couple of small D rings? Need somthing mounted underneathe to bolt to.
having a ford, we had to raise the TC 3+ inches to clear the cab.
we used 2" velcro strips and attached 3" extruded polystryene (XPS) to the underside of the TC. (makes for easy repair/replace w/out adhesive)
tried edging the XPS w/ ~5" wide gym flooring (thinking edges would take more punishment) but it was too heavy so we reverted to just foam and have not had a problem w/ edge compression.
then a 3/8" finish grade plywood glued to the underside of the foam and finished w/ 3" lexan corner guards so the sides of the foam board are protected from load/unload/kids.
we used eternabond doublestick tape between the top of the lexan and the camper to keep water/dirt/dust from getting between the foam and TC.
we have a spray-in bedliner and full fit rubber mat (from summit racing) that we leave in the truck.