Thanks for reply Clementine,
I did toy around with the idea of making a solid anchor,
but i thought it might be a bit restricted in it's limitations.
eg... if you had two anchor pins in the ground and the third one couldnt go in due to a rock in the ground or some other obstruction, you would have to reposition the whole anchor, instead of just the one pin.
The first anchor you showed with the screw looked good however,
only difficulty would be fabricating screw.
regards simon
