Hello all,
This is my first post on this site. I'll introduce myself more later, but I do have a little experience with this. Everything depends on what's handy, but what I have done for most of my mounts is put them in a crab pot with the doors tied open. Hang it from a dock or boathouse for 2 weeks in the salt water and crabs will clean it, brains and all. The only thing you may want to do in addition is soak it in a little bleach water to kill the bacteria before mounting. I've also had friends tell me to find an ant pile. I like the crab pot idea better because it keeps the smell down.