Reelflies.ca™ï¸ presentsÂ… The Black Blob fly. Considered to be one of the most effective fly patterns, this Black Blob fly represents the diverse protein-filled food sources in most rivers and lakes found in Canada and the U.S. This fly is simple and effective. Recognized as a great attractor fly on a tandem system, big brown trout will leave their sneaky cover to absolutely smash the Black Blob. This Reelflies.ca fly dances in clear water mimicking the moves of a swimming leech enticing any trout with an appetite. Retrieved slowing from tail-water drifts for trout, or thrown to shallow water where big bass are lurking, time and time again this fly produces trophy fish. A perfect bottom dropper fly is anyone of Reelflies.ca single egg spawn patterns or anyone of the several nymphs. The two fly system using Reelflies.ca patterns can, and will put the fish on the bite.