As the whole idea is to be naked, I think we take this as a given.
One option is to
1. Go to your chosen location.
2. Strip naked.
3. Roll 2 die, and multiply the numbers. This s how many steps you have to walk away from your clothes. (1-36)
4. Roll 1 dice, this is how many minutes you must be naked before you can go back to your clothes. (1-6)
Not sure how you would prove this as a video would be quite big to email and Ed to post