It is alot harder than you think. First of you need about 1000 decoys to start, and that's a small spread. Then you need to find an area where they are feeding. I am also sorry to say that those big flocks won't even hear you calling if it is just you with a call. Most states now allow electronic callers to hunt snows. If you can swing the money go hunt with a guide some where, you can learn alot and maybe get some tips. Good luck!