Most of the Bumbles I’ve seen have tails of various materials - golden pheasant tippet, GP crest, yarn, but no deer hair wing. This is similar to our Stimulators; it just seemed that they were tied with more of a swept-back front hackle. I folded the hackle, tied it in by the tip and stroked it back while wrapping down the thorax.
Sorry, meant to say “wing” and this is a very nice example. I had heard they liked trolling Stimulators in the UK, but had not realized they tied them in a different style than the US version. Fascinating.