Question for Four Wheel Camper owners and others w/no jacks

I had two overhead truck campers I bolted to my 4X4 pickup bed and loaded and unloaded with cable jacks.One a Security 8ft and the other a 8ft Kit..I still have the cable jacks for emergency's and to stabilize my other campers off the truck.

Back in the day they were either bolted to the truck bed or used stake pocket brackets(much quicker) for a tie down point.