There are the occasional brave or stupid yotes. They can come in pairs after they pair up in the spring. Singles come year round. I have only seen 5 come one time and three held up at 75 yards.
I'll give you a wee-bit of "what's what", since this particular part of your post brought my attention to one fact that will most likely be overlooked while I am seeking information.
The type of Coyote we have in my part of the states is refered to as the eastern coyote. Due to its nature and size, there are rumors that this particular breed of yote is a cross-bred variation of coyote and Wolf.
The typical size of the yotes are around 50-60 lbs. Some are larger. There was a 91 lb yote struck by a car in NY last year.
Yotes around here are NOT loners, nor paired up. They travel and hunt in LARGE packs. We have a coyote pack that hangs in a field near my house. They have been here for over 3 years now, and you can set your watch by the time of day they travel through our fields. Their number is 28. Thats right... 28 yotes in this particular pack. If I had to guess size by what I have seen, I would say the average is about 40 lbs in this group. They are exceptionally brave. We can sit on our front porch and watch the whole pack cross the road, not more than 50 feet away. We aren't even quiet... we will be sitting there (3 or 4 of us) talking in normal voices while they do this.
The Coyotes in VT also travel in large packs... the ones around the area I grew up in were anywhere from 15-dog packs to 30-dog packs. Those yotes, unlike the ones where I live now, would actively hunt deer. I have not yet heard of anyone with stories about coyote taking down live deer, but I have witnessed it personally while living down there. Their actions and hunting/movment methods more closely resemble wolf than the breed of coyote most commonly found in the rest of the US.
So much so, that a number of people in my hometown would actually refuse to go walking after dark for fear of coyote attacks. (that and cougars.)
So in closing... we aren't talking about calling in one or two coyotes at a time. We are talking about large packs of wolf-like coyote closing in on our bate/speaker/us.
Now... proceed with the advice.