Having made our maiden trip with our new Jayco 31 foot C class, towing an 01 Camry with a tow dolly, we opted to purchase an 05 RAV4, (5 speed) using a tow bar. Question is, where's the best place to get one, and how difficult are they to install yourself? Any suggestions are appreciated. (We did check with the local RV sales, but found them to be pretty expensive)