Stocks like the ones fmconceptsinc.com has are the best. Not only do they keep the lee's feet secure, but tying her hands overhead is the best way to keep her from interfering or resisting while being tickled.
Yes, those are great foot tickling/torture stocks!
That image is an oldie but goodie by an artist who I believe goes by the name "Bishop". The captive is receiving a bastinado punishment with ankles strapped to upright stocks. Hands are cuffed behind her and chained to the stocks to keep her...