Cover some miles and country. Usually, once you’re in close to a bull he’ll respond to a call. Driving at nights bugling to find the areas where the bulls are works well also. Just make sure you have no weapons in your vehicle. Waterholes and if it’s early, active wallows.
Find cows find Bulls – last year was tough no noise so I started super ass early and made soft cow calls every 100ish yards – I still hunted super slow and got into elk everyday – biggest key is scouting though and knowing the herd you’re hunting area etc.