I've knit 43 hats so far flat..a rectangle using the original pattern or starting with a K2,P2 rib. Very fast, and the seaming goes quickly also.But that's just what works for me. I don't like working with 16" circular needles.Too much pain.
Wow, I just noticed this! You knitted 43 hats! I knitted 10 and I had a sore thumb! You have done very well!