CA Desert Dog,
The coyotes I have known, didn't seem to be afraid of domestic dogs unless said dogs were chasing them. The barks and howls you mention may work if you had a way to start and stop the sounds via remote control. Constant howling or barking would not be natural. With coyote pups being born at this time, the dominant male coyote will not allow other coyotes or domestic dogs anywhere near the den. Momma coyote will protect her pups also. The sounds you mention, if played at correct intervals may bring you some action. I however, will stick with coyote howls and pup squeals. Now if I had a good decoy dog------Hooo Boy!, I wish that I did.
