I don't discount networking as it has worked pretty well for me. But the networking actually involved working with the people I networked with. These people liked the way I worked and chose to bring me in on jobs they were on. As BZ has stated, networking will not help you when you are taking a POSS test or sitting in front of a panel of interviewers. Unless you have old Navy buddies where you want to go, it is hard to get any recognition just coming off the boat. There is a bunch of you.
Consider contract work to get yor foot in the door. Bartlett, Atlantic group, look them up