During the warm months I have to trim the hedge row once a month. If I do it the job is really not so bad. I call it my hobby.
First I trim along the long edge at the top. Then using long curving arches I trim the sides from the bottom to the top. The last thing I do is bring out the rolling scaffolding and flatten out the top which is no easy task.
This last photo shows the final product after I rake up all the debris and I also had to cut the grass in that yard. This photo really doesn't do it justice. The hedge is at least 50 feet long and trimmed and finished it is 6 feet tall on our side of the fence.