I apply to everything as well, but don't land anything. However, historically, nothing I've gotten that's remote has come from job ad postings. I've always gotten remote work because I know somebody who knows somebody. However, the market's gotten tight in my field, so I'm in the same position you are again.

It's much harder for me, also. I'm a C++/obj-C/C/R/python/ruby guy who only dabbles in web technology. I try to pitch web people on letting me learn, even at a short-term discount, and that doesn't work either. I thought putting out some iOS work would improve my remote-ability, but no go.

Funny thing is, before reading this post, I would've guessed Rails people had it much better than me. :-)