Some ideas to spread hashing power from one GPU to multiple pools.
– cgminer has the option to use the a different config file (-c option for config file) and one instance of cgminer can be started for each video card (using the -d option for device).
– One session of cgminer can be set up to load-balance to multiple pools based on percentage. See this post.

I would like to have separate display for each pool’s hash rate as well.