@east - May be worth trying to befriend a couple to attend parties with. Though we ourselves are not generally looking for SFs, we have a number of SF friends that simply feel more comfortable with us around knowing they have someone to watch their back. We would be more than happy to do that if someone asked us.
I also realize it can be hard to find couples with a straight woman, but they are out there. Also, just because a woman is Bi doesn't mean she can't appreciate and relate to a straight woman as a friend.
Too many single guys simply do not get that many (if not most) SFs want a friend first, and then perhaps a sex partner. They think that because they would be turned on by a pussy pic, that a dick pic will have the same effect on you. If there were a single thing that could really improve their chances, learning this would be that thing.