Elk can be tough as often change bedding areas daily as well as routes to and from feeding areas.They use the thermals a lot,too.I have a place where they go up a canyon,in the morning,after feeding all night in irrigated fields.They leave very early and the problem is,you can't set up in the canyon as the thermals are blasting them right in the face.
Now when they come out in the evening,they come late.Usually,the thermals are then,at their backs but often they are coming down after dark.But sometimes,every once in awhile,they come down the canyon a few minutes before legal shooting time ends.I set up a place to sit,near a big fir tree and just have to hope they come on that trail and early enough to shoot.Either way,it will be a short hunt.If anything happens,it will be in the last half hour before dark.These elk are silent too.I'm not sure if calling would work or not.
Where I am,the thermals are the tricky part.I like sitting though.