Finally a simple solution!
- 20 feet post (5 sections of 4 feet each) with a screw at one end for an easy installation;
- No excavator needed in most soils;
- No concrete or ladder needed;
- Calculate 6 feet of the total lenght to be inground;
- Possibility of an additionnal 4 feet section for $59,99;

Here is a short video to see the installation: 

https://www.youtube.com/watch?v=Dufe-bKdXVs

Easy to carry in a car;

Before digging, make sur there is no wires, pipes or anything similar in the ground.