The range in the responses so far probably point to a great solution/opportunity.
If you start the shoot with the girl clothed, you capture the sense of fantasy of tickling a typical girl you see everyday.
As the shoot progresses, you strip away clothing to make it more personal and intimate to bring the fantasy home to your bedroom.
It's like 'shoe removal'. For those with a devout foot fetish, we want to see her bare sole. But this is even more exciting and erotic if she starts with her shoes on, and we see the act of removing them. So we viacriously live through the fantasy of removing the heels from the sexy off-limits secretary at the office who wears shoes to work all day long when we see our tickle victims shoes being removed. This is amplified if we can see her bare soles as the shoe is being removed.
As for the naked hot chick; If you remember that tickling is a hyper-focused fetish, it will be pretty obvious that the super hot chick is less interesting to a tickling fetishist than the super ticklish chick. The girl who is struggling to hold onto her self control and starts to become self concious and embarassed and then goes berserk or the one who goes from threatening and playing tough to pleading, yelping, grunting, squirming and jerking un-controllably, they beat the super hot looking chick with a pretty mean green stick.
It's possible to attend to many interests from a thread like this. I hope the producers use this input.
James Darke