There are a few methods you can use, when baiting is not allowed, one is a mock bait site with attractant scents sprayed in the mock bait site, honey burns can be affective at times, another is calling methods in high bear populations work well, sow in heat works well in attracting dominant males, also using animal in distress call, make sure you use the right call, rabbit(jack/Rabbit)(Cottontail) etc...
But if you are going to call, better to be off the ground, bears can sneak up on you before you know it, you may find your self with some pudding down your leg real fast;) LOL. Bears come in very aggressively, room full of teeth, if you do stay on the ground to call, have a friend sit back to back, so you both can cover 360 around you. Good luck. Aim small hit small. RAMbo.