The Lift: Hand-crank jacks such as West Marine’s 1,500-pound-capacity swivel-mount model ($114.99; westmarine.com) bolt on or are welded to the side of the trailer tongue and stow in the horizontal ...

The trailer tongue jack supports the boat trailer when it is not hooked up to your tow vehicle. These come in a variety of types, and some boaters might wonder which is best for them. I have used an ...