A lot of times a couple howls will get them going and you'll hear where they are. If you hear sirens from the fire dept or police cars that will sometimes get them vocalizing too so listen out. Loud calls are a big plus. That's my current issue, not enough volume.
I had them talking back during my hunt, but it sounded like other hunters got to them first. I never called a yote before so when they barked back I was excited.