Update: I have changed the title to Hoyles Gem (G.Em for Grannom Emerger) to give this pattern the credit it deserves, I have rarely come across such an effective fly. I have tried using it after the grannom season and it still works extremely well as a general olive pattern.
I have yet to see a Grannom hatch in full swing, but I am told it is a sight to behold. In hopeful expectation I have tied some Grannom imitations and keep them in my fly box early season, since Grannom are on the wing from late March through to late April. Grannom are present in large numbers in some rivers but seem to be absent from others.
Jonathan Hoyle has sent me some examples of a Grannom Emerger pattern, which he had much success with last year fishing on the Ribble. Since they look far more attractive than my efforts and they are proven flies I have posted some photos below:
Hook – Size 14 varivas 2200bl-bl
Body – Masterclass SLF shade 14 gammarus pale watery olive
Back rib – shiny black floss
Thorax – rabbit body
Wing – 2 natural cdc plumes
Since posting the blog this fly has continued to be successful for me, taking fish over different seasons, if not quite as dramatically effective as it was when the grannom were hatching.
Jonathan has sent me a link to a video my Davie McPhail that shows the technique he used to make the segmented back of this fly, the link should take you straight to the part of the video where he demonstrates this technique:
I received the following e-mail from Nick Whatton, along with this picture:
‘the frame of net measures a shade over 20″ chub caught on a grannom emerger similar to the one shown on your new site.