Black &amp; Red Tandem Trolling Fly #2   The Black &amp; Red Wooly Worm has been the #1 choice of fly casters fishing at Pyramid Lake Nevada for more than 4 decades.&nbsp; I have designed a tandem Arctic Fox fur trolling fly in this color specifically for use at Pyramid Lake NV.&nbsp; I fished it for the first time late December 2015.&nbsp; On dark over cast days it was our best producer when trolled near the surface on sinking fly lines.&nbsp; I recommend black flies when fishing in low light conditions because it gives the best contrast.&nbsp; By definition "Low Light Conditions" do not have the light to reflect off flashy materials.&nbsp; I would confidently troll this fly on any lake, not just Pyramid.