If you took a survey of what was tied onto fly rods in guides boats at Scott Lake Lodge this would account for 90% of the flies. Simple, easy to tie and effective. The bunny strip moves with the slightest twitch begging to be eaten, even by a pike with the a whitefish tail sticking out of its mouth.
Sight-casted it offers a fine contract to the silt covered bottom of the pike bay, easy for the angler to track and easy for the fish.
Short strips, pauses and a painfully slow sink even on a tieable wire leader are the cause of many “bow wakes” from giant northerns in skinny water.