Well, I'm not sure with golf....that one sort of stumps me.
Soccer is a huge gay girl sport, to the extent that straight girls will act gay because it seems like the cool thing to do.
I don't know how the gay thing in soccer started, possibly because the countries overseas treat female soccer almost as highly as male soccer and these countries are usually the ones with gay marriage....ie don't care about sexuality.
Tennis, I have no idea but it's huge as well...probably because they all travel around together and bond LOL.
Cricket's another (sorry Hala).
I think you're going to find a higher percentage of gay girls in sport because they have a bit of testosterone about them, even 48kg 157cm me, LOL.