I originally wanted to rush a local because I didn't know a lot of girls on campus and they were the "cool" ones with most of the fraternities at the time.
I was looking for rush advice when I found good ol' GC and I decided I loved the idea of being part of a national, but was still thinking about the local because Gamma Phi was really small at the time and rumor was the charter was getting yanked.
I was driving to work one day and I saw my neighbor from the last year moving into the dorms and remembered that she had pledged Gamma Phi the semester before and never had do to any of the crap that the locals did and at that point decided I was rushing Gamma Phi. The chapter doubled with my NM class and will hopefully be there forever.