I will count myself lucky then. When I saw the coyote in the pasture (again a few acres away and in tall grass) and it saw me, it took off.The coyotes around here have no fear of humans. They will be out and about night or day and will trot along on the sidewalk right in the middle of the city.
If you are going to use dogs to keep the coyotes back, use extremely big tough dogs and use more than one of them. Coyotes eat dogs and the coyotes here attacked my neighbor's Rottweiler. My opinion is that a good strong pen with a cover is your best bet on foiling the coyote who wants to eat chicken.
I've got a large pack in my neighborhood and they swing by a couple of times a year to see if the birds are still securely penned, but they don't waste time staring at food they can't get. The rest of the time they are doing their best to control the cottontail population and I am pretty sure they take out a few raccoons. They also deal with abandoned cats and dogs dumped in the country so that I don't have to deal with them. So, as far as tradeoffs go, I have to pay for fencing and they do a very good job of local pest control.