I setup a proxy to direct my 8 miners at whatever pool I decide on by using batch files. I point my miners at my PC running the proxy (or a rasp pi usually) and just switch proxies when I want to change pools.

I use slush proxy and several settings while launching it; my command looks like this:

start mining_proxy.exe -o us1.ghash.io -p 3333 -rt -gp 8332 -sp 3332 -cu vdv.proxy -cp x

The command will launch a proxy for the Ghash.io pool, and listen on port 8332 for getwork and 3332 for stratum. In the case of S1s, you should use getwork port. The next commands tell the proxy that, no matter what worker name subscribes to the proxy for work will work using the username and password provided (vdv.proxy and password x).

This allows one to put any name/pw in the mining program controlling the machine, and control the work sent to pool by the proxy setup. This allows one to make several proxy shortcuts for different pools which may require different usernames or a BTC address as username etc..

Hope this helps for you!