Okay, so I had been trying the STV Extravaganza contest for a few weeks until my friend came up with the brilliant idea of bringing a few people with Mammoth mount to help me out.
I started out on the south-western coast and I had one of my friends run along the eastern coast, and 2 along the western coast to simply take their Mammoth mounts and stand in the pool and block the fishing bopper for the other players so they can't click it (and of course attempt ganks if the player is opposing faction - but most importantly block casts with Mammoth mount).
I won the contest in 14-15 minutes and people were complaining in the chat.
Cheating? No one told me about the rules! ;)
Good luck! Go win the conest now :D