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 ...

For the price of $159.99, this jack is meant to be welded directly to your trailer tongue and has an easily detachable side-crank handle. It can support up to 12,000 pounds and lift 10,000 pounds ...