If you have your heart set on a
Bigfoot, you will find that the Pin
weight is about 1000 pounds. The sticker on the door jamb of my F-150 lists the capacity of all cargo carried in the truck is 1990 pounds. This means if I hitched up a Bigfoot, I would have about 990 pounds of capacity left. But I have a hitch, a toolbox full of stuff like tools, chains, and lots of other stuff, all of which has
weight and subtracts from the 990 pounds. The crew cab you want makes the truck longer or the bed shorter. Our F-150 has a super cab which has an abbreviated back seat that can carry passengers but maybe not as comfortably as a crew cab. We also have a 6 1/2’ bed. You need to check with Bigfoot owners as to how much bed is needed to hitch a fifth wheel. We pull an
Escape and have room for a toolbox in front of the hitch. Our pin
weight is about 700 pounds.
Start looking at trucks and pay attention to the sticker on the drivers side door jamb. Think more about whether you really need a crew cab and do some research on bed length.