This should be somewhat self explanatory.
Last time I launched my boat my truck spent nearly half an hour with the rear axle getting splashed by salt water, which didn't help my already rusty brake lines one bit. Now that I have a smaller and newer car, I'd like to keep it completely rust free, thus there are two options: extend the hitch or extend the tongue. Extending the hitch can only be a temporary solution due to the immense leverage it places on the hitch, thus I chose option 2.
My trailer uses 3" square tubes with about 1/16" thick steel (really thin). Ideally I'd like to have a tight fitting galvanized tube to go into that, but I couldn't find anything so I wound up buying a 6 foot piece of 2.5 in 11 gauge. I think that's a little overkill.
There are a bunch of holes drilled through the pipe so I can change the length as needed, though I don't expect to ever bother.
Photos: