How big of a PHD?

[Rockbadchild]

yes for sandy soil you have to turn it off like you did... watch to not go too deep and exceed the lifting capacity (aka lifting the front end)

For clay if its wet you have to be careful if it corkscrew in you have to lift it parodically if not it can get stuck, as long as it comes out in chucks you are fin but yourself in sand you should be just fine... I run my tractor idle when I do my holes and I watch for rocks and I am ready to lift the 3point when I start earing the bit grinding on rocks. While it goes down I also clean around the hole so materiel doesn't go back in and if I want max dept I will remove the material that falls back in using a hand auger.

 

[old and tired]

For what it's worth, I take multiple smaller bites before I get to the depth I'm looking for....

 

[Rockbadchild]

For what it's worth, I take multiple smaller bites before I get to the depth I'm looking for....

It comes to a point with experience you can tell what the auger is doing and what you need to do in your soil and moisture...