I'm sure there are "better" ways of doing it, and the promise of auto-mounters is always there... however, I just have my slaved linux boxes NFS mount /home to my master server. That's where my NIS accounts are created anyway...
*just for detail*
My master server has two separate homes, one that exists for the machine (admin) accounts, and another (in true sun fashion, but it is linux) in /exports/home for the user accounts. it's a little manual, but it works for me, and I don't add admin accounts very often