When he stopped the second time and stood there for about 2 or 3 minutes, I think you should have used the can 1 or 2 more times. When he stopped he was probably trying to locate the sound and waiting for it again. When you didn't do it again, he lost interest and carried on with what he was doing. I believe if you stop a deer with a call, then he is interested and is trying to locate where the sound is coming from so he can come and investigate. Just my opinion, it may be totally off the wall. The scent drag is also a good idea, it definately wouldn't hurt anything. Good luck on getting him!!