Boron has also been used in some rockets as an ignition source. Boron-10, one of the naturally occurring isotopes of boron, is a good absorber of neutrons and is used in the control rods of nuclear reactors, as a radiation shield and as a neutron detector. Boron filaments are used in the aerospace industry because of their high-strength and lightweight.
The trailer is the big variable here, but the my 20' pontoon boat weighs about 1600 pounds with all the furniture on. The trailer will probably weigh about 1600-1800 if it's made of steel, so about 3200 lbs is probably about right. The trailer is the big variable here, but the my 20' pontoon boat weighs about 1600 pounds with all the furniture on. The trailer will probably weigh about 1600-1800 if it's made of steel, so about 3200 lbs is probably about right. Minor edit?
Since most trailers of this type weigh about 100lbs per foot of deck length (16' trailers will weigh about 1,600lbs, 18' trailers weigh about 1,800lbs and 20' trailers weigh about 2,000lbs), you must deduct that trailer weight off of the GVWR to find out what a trailer can truly carry on top of its own bed.