Four down tow "bars"

If you're buying to tow for the one trip, look for a rig already set up to tow. Oftentimes they'll have a brake set up and the baseplate attachments already in place. If the rig doesn't come with a towbar also, then you need to remember to find out which brand baseplates and get the correct brand towbar. Much cheaper and easier than starting from scratch. The For Sale lots at the end of Foothills and Fortuna near the freeway will have several to choose from. The vehicles to select from change pretty regular.