Voodoo that is somewhat effective against pirates that I found, not sure if anyone else have any other voodoo to list here.
Confuse < Usually the first thing they want to clear, for obvious reasons.
Blacklist < Just to make a fool of them.
Time Spiral < Each cast can cost them, 'nuf of this basically becomes 100% confuse.
Thieving Magpie < Do ye like gambling?
Swarm of Worms < Because this annoys them.
Hostile Waters < So they would go away
Chains of Justice < Because hostile waters aint 'nuf.
Lazy Craftsmen < Stack 5 of this, this is just so they can't use purify.
Serenity < Because they are still coward so much so that they still need mindbar 24/7.
Buried Treasure/Time Spiral < Just to destroy their countercurse, just keep using this until they stop casting a countercurse on themself.
Fugitive from Justice < If ye really have to, I don't recommend.