I forgot
You can use PayPal for anyone with a PP account. I/they can send money to any valid email address. So that can be used to collect the raffle money. I don't need a ticket in my hand, just let me know what my ticket number is. Then pick the winner at one of the 4 leg tournament days (after selling more tickets), that way there are witnesses around to prevent anyone from claiming foul play (fishy).
Start a sticky tread for the raffle. Anyone who have stuff to donate to the raffle can post it, anyone who would like to buy the tickets post a note then you can measure the interest.
Nils