The published dry weight for FM boats are so low as to be a joke. NEVER, NEVER rely on them!!!
I had a 2009 Yanmar 4BY2-150 powered R-25 Classic with a Tuff tandem axle trailer. We towed it over 13,000 miles in the 7 years we owned it.
It was set up for long duration cruising so it had spare parts, spare anchor and rode, tools, books, a dinghy with Suzuki 2.5 OB, a big solar panel, Yakima cargo box, a propane grill on the transom, Bimini with side curtains, full galley equipment, v-berth bedding, etc., etc.
In the time we owned it, I had it on government or commercial scales more than 15 times. With minimal freshwater, a fully pumped out black water tank and no more than 25 gallons of diesel, boat and trailer never came in under 9,600 pounds. It was never over 9,850 pounds. The average weight was close to 9,750 pounds. Those weights are corrected to include the tongue weight on the truck, not just the weight of the trailer axles on the scales.
I should mention that the empty weight of our Tuff trailer was just under 2,000 pounds. I absolutely can not imagine towing the R-25 with a flimsy 1,100 pound trailer! Having a trailer that light would scare the crap out of me!
I towed it with a highly modified 4x4 Toyota Tundra V-8 that was rated for 10,500 max towing capacity. We were under that weight and all the other weights associated with max truck+towed weight limits.
I have about 50 years experience towing recreational and commercial trailers of up to 15,000 pounds and up to 35 ft in length. Probably about 150,000 miles towing in total. I felt comfortable towing our R-25 with the Tundra. For someone with less experience I would not recommend using the 10,500 pound limited Tundra as a tow vehicle.
We have a C-28 now that has a 12,600 pound total towed weight. I now have a Ram 2500 rated at 15,000 pounds towing weight.