Rich Rudlow had a great GC canyoneering book out.
Edit- oops, it is the Todd Martin book you have.
We did some on my last trip but much of what we wanted to do didn't work out. We did get blacktail and deer cr (yay, just before it closed). We went up silver grotto, had hoped to hook up with Rich's group ( they were 1 day behind us) to loop around to the top of that, but they were delayed by wind. Rich is a great resource, if you can get his contact info he might be willing to give you some tips on what to target. He did that for us before our trip.
I am a river, babe - I've got plenty of time, I don't know where I'm going, I'm just following the lines..... - "We are water" by Shaye