Originally Posted by Roger
I see many are using Hi-Lift jacks, sometimes for purposes other than lifting the mower.
How about lifting out wooden posts, ... anybody?
If you want to build a jig, I'd make something like in this video:
You could try using an 8 inch lag screw and screw the chain to the top of the post. It may hold until the post is out or until you at least get the post high enough to get a chain around it.
If I built something like this, I'd probably not make it a complete enclosed square on the bottom - just 2 forward facing legs. Then it could be used on whole posts without cutting them to the ground if you need to move a fence or could be used for removing small stumps, etc. without lifting it over the stump.