I've used several decoys,but good calling will draw them in without any thing,dont expect to call one in every time,no matter how good you are or what sounds you use,sometimes they just aint coming.I have saw several coyotes on dead farm animals and deer remains,they will hang around these areas for a while until every thing is gone including the fur and bones.They will also hunt other critters that feed on the carcasses,coons,foxes,oppossums and such and return to that area often.I've called in no more coyotes with decoys than without,they mostly distract the animal so you can move to get the shot easier,but they also require more time to setup and thus you are spreading more scent in the area that you are trying to make him come to,I like decoys in larger openings better than woods.Just start picking up road kill if you want a bait pile,theres usually alot of it and I dont think anyone will care,they may be cautious if you invite them to supper!!!