Courtesy Curt Manufacturing (trailer jacks), Courtesy Harbor Freight (trailer-jack wheel dock) The trailer tongue jack supports the boat trailer when it is not hooked up to your tow vehicle. These ...

Harbor Freight sells a Haul-Master dual wheel 1,500-pound jack for $49.99 that can be mounted to just about any trailer and swings away to keep it off the ground while you're towing.

Harbor Freight sells a Haul-Master dual wheel 1,500-pound jack for $49.99 that can be mounted to just about any trailer and swings away to keep it off the ground while you're towing.