get hid well, decoys help, at least a mouth call, and some high brass 6's in case you need to reach out . i have also heard that about letting the first one go by but i usually shoot the firstcrowif there are enough in the distance because it seems like they see that crow going down and really come in just keep the call goin. another tip if you use an owl decoy with crow decoys keep the crow decoys above the owl. crow hunting is another addiction