Promoting a Non Tech Savvy Forum?

[Zash]

I currently run a swimming related forum, SwimForums.net. One thing that I've had trouble with is promoting it to swimmers, since swimmers aren't generally the type of audience that is tech savvy. I've had some luck spamming advertising on Yahoo Answers and Facebook, but other than that it hasn't been much of a success.

Since this forum is a dead forum (it had a few posts a day a while back), I'm going to at least try to reach out to existing members by sending a newsletter of a swimming related article at least once a week. This will keep people informed of my forum.

Promoting offline is pretty much out of the picture, since I like to keep my online life online, and my offline life offline. Any suggestions for reaching this audience?