OSX 10.9.5 automount AFP network volume?
OK, I figured it out.  The keys in the auto_afp file are paths that are relative to the path specified in the top-level auto_master file.

So if your /etc/auto_master has: my/global/mount auto_afp

Then your /etc/auto_afp should have: point -fstype=....

Finally to get visibility into what automountd is doing, add AUTOMOUNTD_TRACE=2 to /etc/autofs.conf, watch /var/log/system.log with tail -f, and start navigating around your mount points.