So I almost finished my first section of fence, and I've learned two things.
1) I have more patience than I thought.
2) There are crocheters out there who love to make some spare money.
After 4 weeks of granny squares, I realized my pace couldn't be kept up. After explaining my predicament to my stitch and bitch, they suggested outsourcing some of the squares. And low and behold, I had three willing people who were happy to sell me squares at a very reasonable price and pictures of the final project on the playa.
With each of them doing 100 squares each, and in addition to mine, I should have all the squares done by the end of April!
So... I took a break from doing the squares, went into the office a Sunday and started putting the first section of fence together.
This needs two or three more rows on top for the right approx dimensions, but I'm really pleased so far.They're stitched to paracord for strength:

And the paracord at either end will be used to tie them securely to the posts:


