I dug a hole 3ft by 3ft by 4ft deep.
I made a hinge very similar to DanB's and set it in the hole.
I put 6 ft legs on the hinge so I drove them 2 feet into the ground.
Then I filled the hole with concrete.
I atached a 20 ft section of pipe to one side and a 10 ft section to the other.
Pulled the 10 ft section and the 20 ft section went up.
When the 10ft section was down I then welded 2 20 ft sections to it to make a 50 ft gin pole. I used the 20ft section to pull the 50ft up.
