Some suggestions:
I create a batch of Dueling maps each day on my server. Most suck but thats why I do it, so people can watch for a decent one worth keeping and using over and over.
http://www.dom3minions.com/RandomizedMaps.htm
Also I post open games which might smooth things out. No chance for host-cheating.
http://game.dom3minions.com/bin/blitz_chk.cgi
Also CBM versions if you would prefer the Conceptual Balance mod
http://game.dom3minions.com/bin/cbm_chk.cgi
Llama Server also makes it easy to quickly create and run a game if you prefer the play-by-email method.
http://www.llamaserver.net/
There is a CHAT button at the top of the forum which allows opening a seperate chat room for each game. This allows some speed in setting up a game and the ability to do some chatter during the game.
http://forum.shrapnelgames.com/misc....ashchat&room=1
There is also a #dominions IRC chat channel at GameSurge.net which frequently hosts blitz games of their own. There are usually people in that chat which might be willing to give you a duel.
http://www.gamesurge.net/chat/