What To Use as "Modeling Release" for GGW Type of Shoot at a Sex Show
 

Can anyone advise (particularly if you know what works in Canada) what to have random performers sign so I can use their image in a video I will be recording at the sex show?

I plan to have a contest set up where a winner will get a grand or so and approach random girls who will be at the upcoming taboo sex show here in Alberta. It's a strict 18+ event so there won't be any issues with potentially underage performers, and I will need to collect their names and phone number so one of them can get the prize afterwards. But I plan to use the video for promo and would like to have my ass covered with some sort of a release. Can anyone advise what to use? Point me to a link with a sample maybe?

bump, maybe someone will chime in ;)