Be certain that you know how far apart those holes need to be, before you begin. With a hand held, muscle driven post hole digger, you take a great deal more time than necessary to do the job. I value my time, and the time of those who work for me. Using a post hole digger that revs up its own power is the way I choose to go. It is just too much strain on the body to use this type, manual tool in the type of terrain that we have.
Blisters form on the hands, regardless of the gloves.
Just using the motorized hole digger is easy, fast, not nearly as pain causing, and allows for a job well done, without the human element making it a miserable experience. Write your own opinion.