I hunt woods in Michigan. My most important tip for you is to keep at it. It took me atleast 50 stands before I got my coyote.
Another tip is to talk to as many people as possible about areas that have a good population of coyotes. As they say, it doesn't do any good to spend time calling areas that don't have coyotes.
I am sure that a good share of my 50 stands were in places didn't contain coyotes. My success come on the first stand I made after a tip about a location from a conservation officer.
Lots of hunters only call for 20-30 minutes then move on. My coyote come running at 38 minutes, if I had quit at 30 minutes I would have had another unsuccessful stand. My suggestion is to stay on stand atleast 45 minutes even if you don't call all that time.
I start my calling at fairly low volume, then after 5 minutes jump the volume to high for 30 seconds or so, then back off to medium to low volume. My reasoning for changing the volume is not to scare off close coyotes in the beginning. Then after 5 minutes the loud calling is to attract attention. Then the remaining medium to low calling is to get the coyote to search for the sound location rather than spot me. I use 3 different sounds at each stand about 15 minutes of each.
I have settled on using a cross wind if possible in my stand location. If I have the wind in my face the coyotes circle behind me and I never see them,(only their tracks later when I leave the location). If I face down wind it just doesn't seem right ( too many years under my belt hunting deer with wind in my face). Another issue for me about the wind comes from years of watching the thread attached to my gun barrel while hunting. It seems to me that the wind acts like someone who is breathing hard. There is a blast of wind in one direction, followed by air movement in the opposite direction as the person inhales. Maybe it is just me but the wind can be in my face then every once in while I feel air movement on the back of my neck. I just feel that I am less likely to be winded with a cross wind. A cross wind also allows me watch my down wind and not completely lose sight up wind.
I mostly hunt alone. I have found that when I hunt with a partner it is hard to control the noise level. I use boogie cords to hook my jeep door rather than slam the door. A boogie cord also is used to hold the tailgate closed before I head for my stand. I load my gun at the jeep as quietly as possible rather than waiting until I get on stand. Every item of equipment has its places so when I get on stand I don't have to make noise digging for things I cannot find. The list goes on, but I do everything possible to be quiet.
It feels comfortable to hunt the same location time and time again. Don't. If a location doesn't produce why hunt it several more times and waste time? If a spot does produce, don't wear it out by coming back too often.