That is a VERY good question. I know if there's rocks, by hand is definitely not an option. It is "well drained" soil, definitely wasn't a former landfill type situation with lots of garbage. Beyond that, I have no clue! And quite a few. The planned fence is 56x80.... so 32? posts. If i'm mathing right. Plus extras by gates... I need to map it out when we get there. I'd like to fence in the whole front yard for them. The auger would definitely get good use... if it lasts... as we plan to put up permanent fencing in the spring for the horses, and down the road to fence in about 5 acres with no climb. Once its cleared. Probably should get the auger. Just shy of spending anything with 30k of barn repairs looming...How many post holes, how is the soil and how many big rocks are you likely to hit?