Hi Gordon
Very interesting thread.
I have had very mixed results with Craigslist
ads so it is interesting to see what works for you.
I too like number 4 line and maybe the hypnosis
one.
A possibility you might want to consider is youtube
videos. They cost nothing if you do them yourself
and getting ranked locally for lessons should be easy.
I am putting up some youtube videos and I have learned
of a special technique to get them ranked which works
even better for local businesses.
I like the ad to build a cash cow website. I am tempted
myself!
Maybe you could offer an online option and get more clients?

Trevor