Hercules ,
I carry several on me when i set up to make a call. I'll start with a mouse squeaker ,for close in yotes.Then try rabbit in distress, i do a series of calls then wait. I try to wait 3-5 min. If no response try again,give the yote time to come in so that he has trouble pin-pointing you.I will sit for 30-45 min. before moving. Calls vary, Haydels,lowman,Knight&hale, Barnums, Circe you can decide.Another way is electronic caller,tapes,cd,foxpro.I like the foxpro for the versitility,just my opinion.