Ray K asked me where my definition of “fly” was from. It was the Maine regs. However, for each state, and even within states, there seem to be different definitions of “fly”.
Here are a few:
PA
Fishing may be done with artificial flies and streamers constructed of natural or synthetic materials, so long as all flies are constructed in a normal fashion on a single hook with components wound on or about the hook. Anything other than these items is prohibited.
OR
Artificial Fly: A fly is a hook, dressed with conventional fly tying materials. The affixed materials may be natural or synthetic. Tied in conjunction with other materials, the following items may be part of the fly: wire (lead or other metal) used for weighting the fly, dumbbell eyes or beads (metal, glass or plastic). A fly is not a hook to which sinkers, molded weights, spinners, spoons or similar attractors are attached.
MOMontauk State Park
In waters designated fly fishing only, a fly shall be constructed on a single point hook of feathers, tinsel, chenille, yarn, fur, silk, rayon or nylon thread or floss, with or without a spinner.
CO
“Artificial flies and lures” means devices made entirely of, or a combination of, natural or
synthetic non-edible, non-scented (regardless if the scent is added in the manufacturing process
or applied afterward), materials such as wood, plastic, silicone, rubber, epoxy, glass, hair, metal,
feathers, or fiber, designed to attract fish. This definition does not include anything defined as bait
in #100.B below.
NY
Artificial Fly means a hook with no more than two points dressed with feathers, hair, thread, tinsel or any similar material to which no hooks, spinners, spoons or similar devices have been added.
NH
Fly: A hook dressed with feathers, hair, thread, tinsel or any similar
material to which no spinner, spoon or similar device is added.
Nova Scotia
ARTIFICIAL FLY?a single hook or
double hook or two single hooks dressed with
materials likely to attract fish, and to which no
weight, spinning device, or natural bait is
attached.
New Brunswick
Artificial Fly
Means a single hook, a double hook or two single hooks that are dressed with materials
likely to attract fish and to which no weight, spinning device or natural bait is attached.
VT
Fly: A single pointed hook, dressed with feathers, hair, thread,
tinsel, or any similar material wound on or about the hook to
which no hooks, spinners, spoons or similar devices have been
added.
I’ll bet we could find many more different definitions. Here is one I find interesting, but it is not a legal definition:
Fly: An imitation of a fish food item, traditionally very light and made of hair, feathers and thread tied to a hook. Modern flies have many synthetic materials and often include lead to help them sink.
Fly fishing: A technique for fishing where the weight of the line is used to cast a very light weight fly that would not be heavy enough to be cast with a conventional spinning or casting rod.
That last definition of flyfishing throws Clousers and a lot of other flies out the window. Guess the source of it.