Changing Out a Trailer Tongue Jack Tim Barker. I go through a heavy-duty trailer tongue jack every three to four years. Corrosion, frequent use, and a hefty boat and trailer take a toll on these jacks ...

Different trailer tongues are made from ­different-size channels. Some are 3-by-3 inches, some are ­3-by-4 inches, and some big ­trailers are 3-by-5 inches. In most ­cases, choosing an appropriate ...