I have finished the legs on my SFS regulation socks and knitted the heel flap.
Then I did the heel turn – which required some juggling. I slipped one sock heel onto a another circular needle while I knit the heel turn and then repeated the process for the second sock. This seemed easier than trying to knit the two heel turns with the same circular needle at the same time.
The real challenge was to pick up the gusset stitches and at one point I had 4 circular needles in use. But I was successful in picking up the gusset stitches on both sides of the heel.
Now on to knitting the gusset and switching back to larger needles about halfway through.