I think the trade show route is a good way to go. When I was working for my last company I was sent to many trade shows, and I noticed that very few of them had webhosts. I know that the wire industry isn't really webhost material but at one show there was a booth that I stopped by and chatted with the guy for a while. He was there to provide a niche service to visitors. Basically he purchased an industry related name, set up a website, and offered hosting and a listing on his site. He also offered simple page design for an additional fee. He said that in one weekend at the trade show he would get between 20 and 30 new customers, with others that would contact him at a later date. He said that he did this for several different types of shows and that was all he did.

I have thought about trying it because there is always some sort of trade show happening. I think that tradeshes are a large untapped market if you can come up with a good plan to offer.