Camper and boat trailers are completely different animals. Campers, aka travel trailers tend to run about 12-13% tongue weight were boats tend to run 10% or less. In most cases trailering boats is the inverse of Travel trailers. The bigger a boat gets the lower the percentage of weight transferred to the truck its due to the way the boat is mounted on the trailer and were the primary weight is in a boat. Most boat trailers for big boats are tandem or better, and the axles tend to be just forward of the transom. in short the weight rides on the trailer axle and the truck is just pulling and stopping it verse actually carrying it, kinda like a farm trailer with front and rear axles. That's why a 1500 can tow 8 to 10K lbs of boat, but is limited to 6 - 8K lbs for a TT.