...Two 2 × 2-inch wooden booms, each ten feet long,were attached to the front of the boat in a "V" position so theynormally were two feet above the surface of the water... 
James Everett Deacon 「Fish Populations, Following a Drought, in the Neosho and Marais des Cygnes Rivers of Kansas」
...The shocking unit consistedof two booms, each with two electrodes, mounted on and operated from aslowly moving boat...
W. L. Minckley 「Fishes of the Big Blue River Basin, Kansas」
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indulgence identified rubbers
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