Rented a boom today

Had some terrible big hanging branches that needed cutting in my yard due to the ice and wind storms of the past few years so I rented a bucket/boom thingie and went to work on them today. It was pretty spooky but the thing worked pretty well once I got some answers on a few quirks. I took it up as high as it would go and it was pretty nifty. This is the thingie...

http://www.genieindustries.com/tmz-series/tz-50.asp