Don't even bother. If this pool gets big any time, it won't be long until the exploited pools IP-ban the meta pool.
There could be ways around this, such as requesting just a few getworks from different IPs, a small helper program that constantly asks for a few getworks and sends them to the metapool... should be easy to set up and not too hard to find a few "mirrors/nodes" for that. I would happily contribute until all pools finally agree that pool hopping is not a crime but something that is THEIR OWN FAULT!
Also if this pool really gets banned and fought big time instead of solving the issue of pool hopping instead, I hope Multipool just releases the code, so anyone can run it locally in private.

(Edit: Just like any other pool hopper currently does!)