What is most weight you guys haul with a F250?

You will need to weigh the truck, getting separate axle weights. Paying attention to the rear axle wt, with full fuel, people, hitch, and any gear in the truck or bed. Most of FW pin wt goes on the rear axle.

Example: say truck rear axle weighs 3400 lbs, and trucks RAWR on door sticker is 6400, you could only add a pin wt of 3000 lbs. At the VERY least, you'd need to stay under your tire rating, which may be around 3500 lbs X2 =7000. I think that will be too much trailer for your truck.

Jerry