was thinking of putting a group together in my area, first problem is finding a pic or set to use,i have asked a couple of family members above 18who look younger,but they have no interest, any ideas

You don't need a younger person to supply the image any age can be face apped to look under 16 even me!

Where are you situated? I am in Australia and want to do the same thing using my pics, if you're not using a sting house you don't need the young looking decoy to open the door!

You can just approach at the meet point and start questioning them!