Most ­boat-trailer jacks are operated manually. The boater cranks the handle to move the jack up and down and raise or lower the boat. Other jacks are available today that work ­using an electric ...

One of the best tongue jacks around tight now is the Brute Power Jack from Husky Towing Products: It sells for less than $200 and takes less than a 1/2-hour to install on most equipment trailers.