Oooooooo! Piper Tri Pacer................ I recall 4 of us squeezed in one of those once. It was a case of 'someone hold onto me till altitude (2000 ish feet and someone push me out when we get there please cos I can't move otherwise' F x
I would say it's a case of experience in the field required for the particular need of the film/tv thingy, and knowing the right people, or rather them knowing you. F x
My daughter enjoyed her tunnel time when she was 9. But she also went wing walking for the first time that year, and now that wins out over tunnel flying. F x