Looking for advice on a new post hole digger. My current Danuser has a 9" auger and can maybe drill 40" deep. I want to make holes at least 60" deep, so I'm looking for one with a longer boom. I can easily add an extension to my existing 9" auger bit. I'm also wanting to buy a 16-18" auger bit for planting trees. It only needs to be long enough for 24"-36" deep. I realize the longer the boom the harder it will be to lift out of the hole, but I seem to have plenty of 3 point lift capacity so that doesn't worry me. And I don't need to do a hole all in one shot, if it takes 2-3 clean outs between strokes to get deep enough that is fine. I thought about making my own boom and lengthening the PTO shaft. But this digger has had a lot of use, good time to upgrade. Any long boom diggers available?