Riggs & Garcia Tree Trimming called us to assist on a tree-trimming job. The boom truck had one steep area to go down to gain access to the tree that needed trimming in the back yard. I hooked up to the boom truck and winched it down the steep slope to the lower flat yard area. The boom truck was then backed up on the opposite side of the house up a steep area as far as it could go under it’s own power. I set my wrecker at the road and ran a wire rope between the two houses and winched the truck up the steep slope to the tree that needed trimming. Using the outriggers and rigger pads, we leveled the boom truck on the slope and I held it in place while they trimmed the tree. On completion of trimming, I moved to the other side of the house and assisted the truck in coming back up the steep slope he had entered. The entire project took almost 4 hours. It was a real pleasure to see a pro at work. Brandon Riggs is truly an aerial acrobat up in the trees. My nerves were frazzled and I was only watching.