Hi All! Thanks for all the replies. Looks like the consensus leans towards a "regular" weight wire for foam flies. Ron, I think you may be right about getting down in the film, because I took one of the EZ Foam FOTW patterns and modified it a little to imitate a cricket. Black foam, and I tied it on a 3XL TMC200R, which was the only hook I had in stock in a 6. Caught 3 smallies (and others) with it today, two of the smallies on consecutive casts. A lot of fun and I learned a couple of more things as well.
Thanks again!