How to Set Watches for NFS Automounts?

I'm trying to figure out a way to set file system watches for NFS file systems that are automounted (i.e., they get mounted automatically when someone accesses them). When an NFS file system is already mounted, it's straightforward to set a watch on the path, however, for automounted file systems, you can't set a watch when the file system isn't mounted. Any suggestions as to the best way to go about doing this? Thanks, --Tad Taylor