I'm not sure the anchor problem is solved, but it is definitely on the run.
As for the poles, the question I think comes down to height, strength and clever loading.
I am not sure how low I can go just yet. I think the key will be to just barely clear the ground. So that may dictate that dimension.
The strength may mean that I need to bi-pole it. I'm ok with that if the carrying package is easy to pack. I'm not chasing grams, so a little more weight won't kill the design. But it needs to be easy to pack and strap.
I think that many of the issues with strength and breaking come down to how the pole is loaded. Lots of poles are plenty strong enough in compression, but buckling is their downfall. I'd like to investigate the loading aspects of the setup to see if they can be used to reduce the side loads.
Since my hammock will be a bridge style (grizzbridge style to give credit where due), I'm toying around with the idea of having 2 poles at either end and attach them where the end of the spread bar is/was.
I've even sketched out a system that uses 1 pole at either end and 2 in the middle on either side of the hammock. This would spread the load out pretty evenly I think. But logistically this may be for the birds.