Depends on if im targeting them or just using them for a little change in the spread.
Usually just set them in groups of 2-3 and mix them in with the mallards. To be honest they are not needed. Goose deeks a few mallards and mojos is all thats needed to wack um.
If im targeting pintails, we usually put six of them a bit out front as tho they just landed and are walking in to the rest to feed.
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