Nice post Kelly, I too have used an olive bodied version of the cripple for Baetis. I've also used both the Green Drake and Brown Drake versions and caught big fish on both patterns. One I like even better for the Brown Drakes is that big emerger that Harrop does, almost like a wet fly with a big CDC wing angled back and partridge hackle. I think I had a version photographed around here. Nope, but there's one on Hans' site here:
http://www.danica.com/flytier/eausti...ke_emerger.htm
I've had more success with this fly during the Brown Drake hatch on Henry's Fork than even the Brown Drake Cripple. It really is amazing, but once it's really wet, it's hard to keep floating, and for some reason known only to the fish, it works best when floating high. I know, it's counterintuitive, it's an emerger that fishes best dry, but that's been my experience.
Eric