I might add that I run HappyJac tie downs. When I bought my Lance a long time ago, TorqLift wasn't even around (or thought of) so it was HappyJac or zip. I've always been happy with mine and I've never had issue one (other than replacing 2 of their tie downs that rusted pretty bad).
Hauled by big HS Lance all over the United States with them, on road and off road with no issues at all and now they secure my Palomino. Always have been very happy with their tie down system, It's quite a bit cheaper cost wise than the TorqLift and it's easier to install plus you never have to get under the truck to remove the system and I have never run a bed mat. I have a Rhino Lined bed and and thats all and the camper(s) have never shifted, even off road. Maybe I'm an exception but it's been a non -issue for me over the last 15 years or so.