Here are three types of tongue jacks for today’s boat trailers. Swing Jacks. The Lift: Hand-crank jacks such as West Marine’s 1,500-pound-capacity swivel-mount model ($114.99; westmarine.com) bolt on ...

Bolt-On Swivel Tongue Jack, 1500 lbs. capacity, with an additional 2" of travel; ... CURT 28912 6-Inch Replacement Boat Trailer Jack Wheel Curt Manufacturing. 1595 ...