I am planning on building a deck soon, and wanted opinions on the best way to dig post holes. I have to go down about 36" in clay with some rocks, the bottom of the hole needs to be 12" diameter, and I'll probably need 10 or 12 holes. Options I've been entertaining are:
1. Shovel and handheld clamshell type digger; free, but tiring.
2. One of those handheld gas-powered auger ones that you raise and lower yourself; about $40 for 3 hours from the local rental shop.
3. A Toro Dingo mini skid steer, which I think would be nearly effortless, but would cost about $200 to rent and I'm trying to keep costs to a minimum.
The deck I'm building is at my home so I'm not in too much of a hurry, but I don't want to spend too much time digging holes. Any advice wuold be appreciated.
While I'm at it, I'm leaning towards using screws to fasten the decking (2x6 treated). Some people say they like nails because they're faster, I think screws might be better in the long run??