Shoot a tickling video, but do it in front of a live audience of about 10-15 people, just seated and watching. Get their reactions - facial, body language, hands, feet, shoulders, etc. as they witness the tickling performance.
Not Dada enough? Have those who are willing put their names into a bowl. At the end of the video, draw out an audience member's name. That member gets to tickle your bound captive him/herself fonr 10 minutes.
Another name is drawn. That person gets tickled by both the above audience member and the now-free former tickle victim. Anyone in the audience, male or female, could be a tickler or ticklee. No one knows who it will be and therefore, while willing, isn't fully prepared. L.H.O.O.Q.