Could you implement a system to hang semaphore flags out the window? People could use the moochy slf pilots to wave them, and give them a job, and it would mean they were visible in the cockpit - killing two birds with one stone.
An alternative would be like those planes that carry message banners out the back, but the commando could get the message out with a clever puff of exhaust.
I look forward to receiving my royalty cheques in the mail from next Monday, and in case anyone thinks I'm being serious, this is a joke!