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So, it's really easy to aqquire large amounts of Goomies very quickly due to the fact that nobody wants them. Once you start collecting, you gain about 15, but then you start sucking the entire league dry. (I recommend trading for them at a league.)

If you have the capability to move to a different league just once so you can get people to trade you Goomies, you will get the 15 Goomy push once more. So basically, just league hop every other week. (Of course, I can't move to other leagues anyway.)