Mr Jake,I have called in many bobcats,for myself and freinds,When ever I find a area that is holding a cat or 2,I try to get up as high as I can,I will put the call below me in a ravine,low spot ect.I NEVER put call on the ground,always in a pine tree,sapling,bush,whatevers avalible.99.9 percent of the time I use bird in distress sounds.Low to medium volume,2-3 minutes,then wait a little while and repeat with same or different sound.I have seen cats take as long as 40 minutes to show themselves,when they do they are sitting right under the call.Sneeky Buggars!When you had enough and are ready to leave give it 5-10 more minutes,this has paid off for me.Good Luck.