I understand people are "sneaky", for this I suggest Gold league members to recruit agents who are "Able" to boost/buy CE for each player that they commit.
This way, if someone does decide to get "sneaky" you can just boost/CE in return, and we will just be sure to do our best to be sure that team never fields a roster again.
As far as agents who own their entire team, I'd like to know exactly who those people are, and we can just put there heads on the trust block, as... teams with multiple agents won't be any more capable of boosting on a whim than any other team they face.
Essentially, I don't think that anyone is going to just blatantly lie to try to get a Gold trophy, because honestly, where would that put them, besides the laughing stock of Pee-Wee.
I'm sure they could post it in the general GLB forum and get a good laugh... but those of us who care about this game will all know who the real champions were....