RE: Double Sonic
I fly my personal airplanes left handed or Mode 3. I test fly planes for the other guys on Mode 2. They way I tell the difference is I use a neck strap on my planes and hold the transmitter when I fly right handed. If I feel the pressure on my neck, I know to fly lefty style. Works for me. The guys think I'm crazy to switch back and forth, but they still ask me to test their planes. I just fly Mode 3 better.
I have only flown Mode 1 a few times. Mostly I have flown the split stick, 2-channel tx on gliders. I sort of put pressure on both sticks, but only one moves.