2018 FORD RAPTOR SUPER CREW CAB
Maximum payload weight: 1,200 lbs
Maximum trailer weight: 8,000 lbs (with a weight distributing hitch, see table below).
GCWR: 14,250 lbs
What does this mean in the real world? If you have a 2017 Raptor Super Crew, and you are towing an 8,000 lbs trailer (with 800 lbs of tongue weight), then you can add up to 400 lbs of weight (people and/or cargo). All together, truck + trailer + people + cargo cannot exceed the GCWR, which is 14,250 lbs for the Raptor crew cab.
In general, the fancy suspension on the specialty off-road trucks does limit the payload and towing capabilities. This is not just the case with the Raptor. The payload/towing capability decrease is similar with the Ram Power Wagon, Toyota Tacoma TRD Pro, Chevrolet Colorado ZR2, and many others.
Based on that - I believe I am good. I wont be towing with a full truck, bed and boat. The boat is 5,000lb out of water. In the water it can get to 8,000lbs + with ballasts, fat sacks, etc.