Nice reactions! I like B2N2's tip:
https://www.aircraftspruce.com/catal...atsfueljar.phpMore people use this?
Indeed we are being watched more and more with our "polluting" and noisy planes and we have to be careful with bad press if seen by someone. Well, if the solution could be that item, it would be great..... keep sending Your experiences.
Having something O/B would make You independent of local solutions, as long as no drained fuel is carried O/B back home or so.