Turn Signals and DE's

[ninjabones]

I'm in favor of the hand signal over the blinker for the reasons that Brian mentioned. However, of more concern to me is the inability to use my driver side window net in DEs.  I can sneak a finger or two out to signal a pass on the left, but can't get my arm out the window enough to signal a pass to the right over the roof of the car.  Not sure why (perhaps in advanced groups), for passes to the right, we can't just point the next driver by with a quick hand signal inside the cockpit with the right hand (something that is commonly done in racing when signalling faster out-of-class cars).