When I commented on using weight on a fly leader I was thinking of a #4
splitshot with a #22 fly versus trying to weight the fly itself. I've fished
the Beaverhead in Montana the past several summers and split shot with tiny
flies is a deadly combination for big browns. Washington flyfishing only
water rules also do not allow two flies. If you could fish two flies you
could use a larger weighted fly to get a tiny fly down. I could see limiting
the size on split shot but I can't see any logical basis for the current
rules.
Terry Whitworth