You can still use the IP boards:
Invite your friends and use them, it's what they're there for!
Also they work with Qtracker www.qtracker.com
Free and easy to use...
I prefer not to use the Zone, but sometimes its the only place that many games are going on anymore (sadly). I say spread the word and play on IP (my personal choice).
also supports JK/MOTS and is IMHO better than the Zone. Again fewer people realize you can go there, but if you invite more folks to come, they may switch. We can only hope.. ; )