Thinking Laterally
...understand what you are are saying .... and that would be exactly true. However, you would probably be able to find a plane that goes to a dirt strip on a regular occurance - and tee it up in advance with the run....and voila there you have it. Or at very worst a plane that goes near a suitable dirt strip on a ferry home that you might be able to tee up in advance.
Only what i would do. But I am not in advertising - already married these days. But I do hear these advertsing dudes get a bit of a big budget to do these things - so money may not be the obstacle to overcome.
I am sure you will work it out - and my very best wishes. I do look forward to seeing the ad.