Well that kind of depends on who (or what) is doing the lifting. For example, I could toss your toolbox in my trailer in a New York second with my Kubota's 3/4 ton fork lift
Seriously, it all depends on the tools/equipment you have at your disposal. My little 5x9 will haul 5,000 lbs. I have a set of "ramps" for light weight stuff. But if those puny 2x12s can't handle it, I just lift it in with the Kubota's fork lift. And if it is still to heavy, I lift the tongue of the trailer up (with a trailer ball installed on one of the the forklift tongs) and haul it in with a come-a-long. There are lots of ways to skin most cats. But some times you have to think out side the litter box
Funf Dreisig