I understand the problem with builders/contractors and this time of year. I like to find workers via CraigsList or by personal recommendation. It's always worked well in the past. The deck replacement, tree and hedge removal, and replacement of all the windows are examples of CL gone well and most likely many dollars saved. However, we were unable to find a reliable fence builder that both had time and gave us confidence. We started checking late and most of them were booked well into the fall. So, we finally tried one of the local pro outfits. They came by the next day to give us an estimate. Ten days later the fence was in.
We did spend a few dollars more, I think... But, we got exactly what we wanted. Some days price is not the end-all.
I hope you find a builder. that suits your needs.
Or we could just all get together and have a good old fashioned barn raising. Possibly followed by a good old fashioned barn razing... Can a building with 4 walls be tougher to design and build than a winning downhill racer?