Infinite Create-a-Player Credits:
Create a player, then go to Edit Player. Select the speed Category and then choose attributes. Now you should have 99 Points maximum in each category.

Thank God Saving:
If you have points to buy Madden Cards, don't buy them yet! Save your game, then buy your cards. That way if you get bad cards you can restart your game and try to get better cards.

Thanks to Revolution readers The Frig and Joshua Kahue!