this is what you need...i got one, it works everytime and you dont need another guy. 1/2" rachet, 1/2 breaker bar, and a floor jack handle. put the rachet on the tool, block it against the frame rail, put some extensions on the bolt and use the breaker bar with the jack handle on it you can put down like 1000 FTlbs that way.

PLEASE NOTE: if you have cheap tools they will break! use craftsman or snapon or some other good quality tools. espicially the extensions.