Replaced belt tensioner 3.3l

I replaced the serpentine belt tensioner last night. I drove the van up on ramps. Got underneath with a 15mm socket, a swivel, and various extensions. With a light I could just barely see the nut. Offered up the socket, and 2 minutes later the nut of course the tensioner were off. Yes I removed the belt first. I put the new tensioner in place and wedged it tight with a small piece of 2x4 so it stayed in place while I replaced the nut. From underneath I managed to start the nut with fingertips. Could have been done with socket and short extension. Once started, put together the extensions and snugged her up. Total time, 15 minutes. Unless you have AWD, don't even think about doing this from above. It's cake from below.