I believe the late Paul Kukonen of Worcester had something to do with the origination of the pattern. I grew up in that area in the 50's & 60's when parts of the river was unfit for most aquatic life. During the warmer summer months the river would become delpeted of oxygen abd all of the rough fish (carp, suckers, bullhead eels, etc.) would die off in what locals would refer to as the "dance of death". The conservationists should be applauded for reestablishing the river as a cold water fishery once again.