I know that I missed the boat on these threads, but I'm starting now.
Better late then never!
Today I brought out the clicker and successfully identified one re-inforcer for Tiki, my GCC. He LOVES Honey Nut Cheerioes, and I'm happy using them because I can break one into many tiny pieces. For the 10 reps I only use 2 whole ones. I'm excited to get going on this, but I'm going to take sometime to see if I can find some other treats that he would be motivated by.
He acted like he was offended that I offered him cheese, so that's a no go. Little bugger tried to bite me when he took the cheese and spit it out!
We have done 2 sets of 10 reps so far, and I do think he is responding to the clicker by looking at me and being very attentive when he had otherwise turned his back to me.