Well I have now formulated my "au naturel" travel plan.
I shall remain clothed during check-in, to avoid the inevitable "interest" from airport security.
However, once airborne, I shall disrobe in the toilets, and return to my seat.
To avoid unwitting brushing my chubby chipolata over my fellow passengers when I get up, I shall procure a posing pouch, perhaps in the colour of the airline concerned.
This is about demonstrating that naturists the world over have nothing to fear from practising their favoured activity in a much wider variety of situations.