Just my opinion you may want to do the contest the way you described the first time. I tried to run it it last year got 6 pics sent to me from the captain of the teams one team captain never sent one pic to me for the whole contest. And I made it clear at the beginning to every body so you would be better off drawing teams at the end and have you sign up like you said have a list of those that did have them post there pics there. I spent 5 hrs one night looking around for pics just to give them a mid season standing. So good luck with the contest I think I will go back to hunting and skip the rest of the other stuff. Just my 2 cents.