The first ring chase I did was on blk locust. Mine (they are all different), I had gone through several and was confused. Some one showed me where the rings or at this point layers were, I think I was chasing three different ones at once! The thing that stays with me was when you hit the spongy part, and are chasing one ring it sounds like tearing a piece of paper. The sound helped me more than any visual, I finished the stave in the dark by sound and feel only. It came out better than I expected.
I was recently trying to chase a ring on a piece of persimmon, but the rings were so tight (paper thin) that I could not do it. Pat gave good advice! Follow it.