Try to understand mechanical settings.
COG plays important role in TC loading only if you get undersized truck for it.
My 1st dually was converted Cab & Chassis, who having longer frame for 10' bed would not allow me to slide camper all the way behind the cabin.
So I secured it with about 18" of space in front of the bed and that was convenient for carrying stuff.
Than C&C had stronger suspension who could carry 6000 lb camper with COG behind the axle just fine.
But don't try that with any SRW, or even on dually with suspension build for grocery getting.
