Where was the wind hitting you as you walked in? Itd be tough to always call with the sun behind you and wind right, it is doable, but does take alot of work to make sure every stand throughout a day is set up right without knowing the land.
How close were you to these draws? Couldve been "too deep". Let the coyote come to you a little, instead of you getting into its normal bedding area. 100 yards from breaking over a hill is great in some/most country around here. Keeps them from spotting you coming in, but doesnt put you out of range for them coming in. Ive seen coyotes respond from a mile away, 100 extra yards is nothing.
Turn that caller up. Use a quiet call at first incase you come up on one napping, then turn the volume up, Ive sit down 20ish yards from a sleeping coyote once. That call isnt going to play too loud. When I see one at a distance, I tend to turn the volume down or off. If they lose interest a little Ill turn it up a bit to get their attention back then turn it back down.
Do you have a sat or topo picture of a stand? Mark wind and sun on it and thatd help guys give you more advice.
