Where would be a good place to run autofighter pro from 3-60cb? I don't mind switching places, but the rsbots.net website is down so can't see what people suggest there
Depending on the pure, just train on anything that can't hit you. If you have a 1 Def pure, train on things like cows and monks. If you have higher defense, you can try minos, or flesh crawlers.
Go to the stronghold of security, there are some nice weak monsters there to train on. After you get up there I'de say rock crabs wouldn't be bad, but truthfully training f2p with it isn't bad :S