I am a odd duck , when I talk of flys - I think like classic flies( m.o.m., bergman style) an the " wets" wooly buggers- ( post 1950) drys are anything ( minus foam, or modern stuff like that, this includes balsa)drys are the ones that float with the fur an feather ( to a certain degree is classic) this is one of those subjects that evolve in circles , but in the end , to me an only to me , it comes down to ..... Warmwater , cold water , classics ( I consider tenkara dry ) ... I am not a guide or a outfitter - nor do I have a degree in a bugs life - I am jus a old marine - that fly fishes for the love of the cast - every learning to wait for the tug - I hope I haven't spoke outta turn , I tye flies for the same reason I cast