What is the best way to dig a deep hole for a 4x4?
I'm looking to dig two holes each for a 4"x4" wooden post. The posts are about 15 yards apart and I would like the holes to be a deep as possible, 5ft ideally (3ft min), with minimal work and cost.
I don't want to hand dig - too much work.
I don't want a back hoe - too much cost and cleanup.
I was thinking of renting a post hole digger with a 6" Dia auger at $30/hour, but the max depth the auger goes is 3 ft, and I would ideally like to go 5'.
Does anyone know if there are deeper augers or of a better way to go deeper?
Thanks in advance!