Who suggested calling a spot once or twice a year?
I said that is what "I" prefer to do because I have enough places to call I don't have to wear my welcome out at any one spot. And because we don't have 1000s of hard up coyotes competing for food, that respond to a squeaky door hinge like you do.
Heck call the same spot every day for all I care if it's working. If you can get away with what you are doing, go for it Robb. I really wish it worked like that in the real world. Apples to oranges.
I'm just saying the tactics you speak of will not work for me here. No way no how. I've tried it and it doesn't work.
Have I once said my advice was the right answer. No. Here is a recap...
"I wish there was a right answer for this. Let's see...how about 14 and a half days? LOL. Seriously though, people will suggest all kinds of time frames you must adhere to before trying that area again. Which is the correct one? Dunno. So many variables influence whether a coyote responds or not, it would be impossible to give a correct answer."
No right answer.