To the OP... you watching how the "road bugling" is working out for the BRO guys this season? I love those guys as an OR native, but that as a tactic is such a low percentage play.
I can remember a few years ago in WY with my dad. We walked out about a 1/2 mile onto an open ridge with an open atv trail on it. Waited until it was close to light before making any noise. About then a SxS came motoring up and looked at as as if we were sooo stupid for walking up there. After they motored on, we waited 5 minutes then let out a bugle. 5 minutes later I called a 320+ bull into my dad. All the while the motor heads had no idea
The point? Elk are not f-ing stupi! They might answer a truck, but they know you are a f-ing trucK!