I am refining my technique. I pad the edge of the fender to protect it, then remove the radiator reservoir cap, and place a scrap of plywood on top to lay on. Then you can get comfortable while you position your left shoulder close to the firewall. In this position, you can snake your left hand in to guide the socket on the end of a flex-joint and extension to the bolt head. I like to tape all the pieces together (including the bolt during re-assembly). I'm slow and it takes me about twenty minutes, but its not too hard.