Ook wrote:

Concrete. More work. Strongest. Post in contact with concrete may still rot
out in 10 years. Difficult to replace.

concrete of not the wood is going to get wet

get a bucket of drivesealer, mix some kerosene with it
dip the bottom of the post in it, stack them let them dry...
repeat a few times...

set them in dirt, dirt will settle rilltight

but you haven't said what the application is, or what is going to be
hanging on the poastseseseseseseseseses

it matters not really, you stick two feet in the ground they won't
fall..
you treat the bottoms LIKE I TOLD YOU
they will outlive you

WHATEVER YOU DO RENT AN AUGER

ok, since you're forgoing concrete rent the auger

personally I think you should keep talking about it for a few more days

G --- that's a grin

lastly don't listen to ricdejour he's full of bologna sammiches, really
he is