How far should I dig the holes for a 4 x 4 hammock stand?

Question

I have two 4x4 posts and was told that for a hammock i would need to dig the holes 5 ft down-put the 4x4 posts in and then back fill with cement. Problem is the ground is extremely hard and I am tapping out at 4 ft. Does 5 ft seem right as far as the depth needed for a hammock?

Answer 1

42 inches will put you below the freeze line.A post for a two story deck is inly 42 inches in the ground.It will support you just fine.

Answer 2

I'm no expert, but I'm sure that you won't want to fall.

Might hurt.

And probably so; my grandfather has a mailbox he put into the ground the same way, and he didn't put it AS deep as instructed, and when hit by bat/car it fell. When he redid the job, putting it the exact depth, it didn't fall.