Halfbaked... I thought about adjusting feet but I mainly built it to take up to a mountain clearing. I think if I take along a small shovel I should be able to clear a little soil to level it. I want the bigger footprint of the 2x4 for stability and so it doesn't sink in. If it doesn't work then I will look at adjustment options.
Builder...A folding chair works just about perfect. I have to scoot down slightly since I am tall, 6'4", but I wanted it to be short enough so others in the family can use it.