Glad that Gonzo knows something about the local insects--I'd do what he says.
Thanks, Shawn, but I know next to nothing about the local (Yorkshire)insects. I did have a British resource, however, and I'm familiar enough with most of the genera to try to make some suggestions based on my experience with our Yankee versions. As for doing what I say, you should always remember that you do that entirely at your own peril. ;)
I'd suggest that Casey take Mark's advice, both about the soft-hackles and about getting help from someone who truly does know the local streams and insects. Advice from a diletante like me cannot possibly match information from someone who actually knows what he's talking about! (And especially from someone who speaks with a British accent. That always makes things sound much more impressive and authoritative to me.) :)
PS--Mark, I've always thought that the Halfordian traditions of Hampshire have mostly contributed to creating dry-fly snobbery over here. (Not to mention eventually driving my favorite British writer, G.E.M. Skues, from his beloved homewaters.) The North Country traditions, on the other hand, have given the world some of the most elegant and practical flies ever devised.
PPS--Nice site, Mark. (I especially like his disclaimer on the home page.) Have you seen this yet, Casey?