I just finished a drunkard's path a couple of months ago, and here are my notes on curved piecing:
1. Clipping curves and pinning works great, but takes the most time. Stay stitching was not necessary for these small pieces.
2. Some people can sew the curves without pinning at all. I am not one of them.
3. Creasing opposing parts to mark the centers for pinning was essential.
5. Pinning centers, ends, and the middles worked great for me.
6. Stilettos are essential tools.
7. Your mileage may vary.