When I am ready to join in the round, I place a small pillow on my knee and lay the knitting on it so that I can tell if my stitches are all lined up. And it stays there until the round is good and started.
When using dpns, I use the same method, leaving the 3 needles laid out on the pillow in the proper way, then I slightly raise up the 3rd needle, put my empty needle into the last stitch and wrap it with the yarn from the first cast on. I used the pillow to set up the first row and by the second needle everything is quite firm and working like a charm.
TEMA
