My strategy is quite different then that slickerthansnot dude but that doesn't make him, or me, right or wrong.
When considering how much volume you use, there are several questions you need to ask yourself.
1) how far will you travel to the next stand
2) what's the coyote density in the area
3) how is the sound traveling at the moment?
4) how long will you stay on stand?
5) do you believe that if a coyote hears the sounds and maybe guns shots, but isn't close enough to come to the call, will this affect that coyote if you move closer to it and call again?
6) how much is the wind and terrain limiting sound travel and if there is a lot of wind, you have to consider how much additional noise that creates as it blows through trees, or tall grass. etc.
With all that said, with no wind I rarely run my call over 1/3 volume. Even 1/4 volume often times.
It takes a lot of wind before I get anywhere close to full volume, and usually when it gets like that, I throw in the towel and wait for a better day. But I hunt in country that most would consider high coyote density. I rarely sit for more than 15 minutes and I often move 1/2 mile, sometimes less, sometimes a bit more. And the terrain I usually hunt doesn't have a lot of big hills and no trees so the sound travels quite well on cold days. I don't want coyotes that I am not targeting on any one stand to hear the call. Maybe it doesn't affect them, maybe it does, but I don't want them to hear my tricks before I am trying to trick them.
Over time will come experience and you'll figure out what works best for you. Not one method works for all, you just need to find your grove.