I know of at least on club member who, when came his time to launch, made sure we were all under cover, his model was vicious and would eventually ping off somewhere up the launch, usually pointing straight down until one day when it launched perfectly straight and floated off into the breeze like a lady. Congratulating the pilot revealed that the RX was switched off... Less controlling is best, until you can manage the sideways swing to build up stretch and energy for a proper ping at the top.
Evan.