How about peeps can use any trading platform they like, btp, angel, normal betfair, but any cost must be knocked off the profits (or more likely added to the losses)?
Hence, use Betangel, but whatever that costs, you gotta knock it off at the end.
I think Munk was suggesting he may be able to get some group discount. I'm already paid up for BTP, but Betangel seems like the poular choice, so maybe something could be done?
Will certainly try and get some interest from the bet trader pro (BTP) guys. I'd prefer to use BTP as it is the best Betfair software IMHO, but certainly worth keeping an open mind re BetAngel. See if BTP guys show any interest first I reckon.
Regarding reffing, I would hope nobody is that insecure that they need to fib. If you did want proof of any trades, you could see a screen print of the backs and lays that make the trades.
Ideally we would all start with new Betfair accounts (which is fine to do and this is a perfect reason for having a new BF account to 'ring fence' trading funds, plus signing up via TGT will help generate income for any prize fund), so anything traded on that new account goes towards the competition p&l full stop.
Whoever claims to be winner could then submit a copy of the p&l data from betfair along with a screenshot maybe of same and it can be verified etc before any prize is paid out (if it goes that way).
Painfully aware that this could get overcomplicated though!