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?
Four hydraulic cylinders with steel alloy piston rods supply lifting power. Two heavy duty hydraulically operated lift modules provide up to 5800 pounds of lift capacity. Two large 18-inch x 48-inch pads support the pontoon on lake bottom. Single 1-hp pump tucked neatly under a seat activates the hydraulic cylinders. Pump features an automatic shut-off alarm system to signal that the legs are fully retracted. Sea-Legs are operated by either remote control or directly, via toggle switches located near the pump. In retracted position, legs tuck neatly within 5 inches of pontoon deck; works with any pontoon trailer, no drag while in water. Total weight added to boat approximately 385 pounds, evenly distributed.