Another option, and one that I think is rather commonly used, is the "friend net" method of recruiting, which is a sort of derivation of both wide net and headhunting.
In the "friend net" system, you start with a core group of people who already know each other, who each in turn invite a friend they trust. It's important to note here that the person might not be trusted in the beginning - for instance, my first CEO and I had chatted in local in a system we both ratted in for some time (I was still in the Imperial Academy). One day, he managed to get my normally extremely cautious self tackled in a belt; I was in a harbinger and he was in a hurricane. He beat me into hull and then said that no, he was not a pirate, but felt that from the talks we had and the fight I put up in the belt that I had potential as a good pvper. He then invited me to his corp.
In this case, there is initially a "wide net" approach in that anyone can approach you and ask to join. However, you require them to go through a process - either a waiting period or series of tests or trials, or even both - that converts the process into something much more resembling the head hunting approach.