I've just started and I heard that forefinger and thumb meathod gives you the best control, so I tried to get in the habit of that method. So, my initial flights were sitting down w/o holding the transmitter, I did not want to concentrate on holding the transmitter instead of flying on my first flights. Just use the most convient meathod, and don't try to switch methods all of the time. If you do, well, you know what might happen.

Do whatever you want, my 2 cents.