You can do a 16 point roll manually. Actually, it would be harder to do it with a switch. Although I've never really tried a 16 point roll, I've done a 16 point rolling circle. I've got a friend that's done a 36 point roller with his pattern plane. The hardest part for me is keeping up with how many points I've done, and keeping them spaced. I can't count that high without using my fingers, and they're busy on the Tx.