Greenhead flies in my sailing area of Barnegat Bay are a frequent nuisance. Having a boat with Catalina blue dodger and bimini may not help. They often seem to cling to the blue cloth while they plot their attack. Or so it seems. According to a few sources, flies are attracted to blue and black, but especially not to yellow. I imagine the smell of people meat does more to attract them than anything. There's one boat i know in the bay with yellow canvas, but I've never chased it down to ask. Does anyone have the experience to compare canvas colors and their likelihood of attracting flies? Any entymologists care to chime in?
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