Hate thread resurrections but i'm doing one myself now... to mainly suggest an idea for content.
Besides simply tickling and Absolute tickling...and JPFC the German tickling video producer from years ago...I just don't see a lot of this in terms of tickling video production.
I think it may be an idea...suggestion even, for producers to maybe dip a toe (no pun intended lol) into this Niche taste, because for many of us, this is a brilliant, tease way of tickling and as a member mentioned earlier in the thread, it makes the Lee more sensitive, even in flip flops, due to the mind thinking that the feet are protected.
I have experience of this (I have a day off work today so i may type up the stories after I take dog for a walk), and it is indeed true, the Lee's feet become more sensitive. It's similar when you tickle the waist of a Lee when they have a t shirt or something on as opposed to naked, they seem more sensitive as they mind think's they're protected but they're not.
I have also used an electric flosser on my close friend a while ago when i went to see her, as she'd told me whilst messaging that her Converse had a hole on the right shoe where the pinky toe goes. When I went up to visit her a week later, she let me (after me bringing her a Subway) use the flosser through the little hole. I'll type up the story today for you guys, but it was the BEST ever reaction i'd had from her. Better than Anything I had tried previously. Best of all, I had her shoe gripped, laces tied, so she could move her foot in the shoe to try get away but it was pointless haha.
Things like this leave a lot to the imagination, and so are often more sensual, more arousing.
Just my 2p (or 2c as in the states).