Very nice John, thanks for putting his writtings into public domain. I might have met the gentlemen in question at one time many years ago.
It has been my long time ambition to put this style of fly more to the fore.
Many anglers have not even heard of it & many more think it is confined to the river of it's birth The Clyde but not true. This style of fly will catch in any water that Trutta frequents & in any part of the world. Good of you to take what must have been a considerable time to collate it all. Sure Mr Forsyth will have a chuckle from his lofty height.
Meanwhile a wee look at one 1/4 side of my "dark" Clyde fly box for those that may be interested.
Tight lines