Thanks, poke.
Interesting, Gary. There's a local guy doing the same thing. Here's a link to an article he wrote about it:
[url=http://www.flyfishga.com/bloodworm.htm:b7ea1]http://www.flyfishga.com/bloodworm.htm[/url:b7ea1]
I periodically catch gills with bloodworms coming out of their mouth.