Remember too, that the bow wasn't used as we do today, but was a short range proposition.
My great grand father taught my mother to hunt circa 1929 (she was 6yrs old) with a home made bow, taking "called in" quail at ranges of 15-20 feet. He was a full blooded creek Indian, his grand father fighting with "red sticks" against Stone Wall Jackson at battle of Horseshoe Bend, in east Alabama circa 1812. He told of his father hunting rabbits by snaring, and told of shooting deer in snares in N.Florida while growing up with the Osceola Seminole prior to resettlement in N.Alabama. My great-great grand father resettled in n.e. Alabama following winning a section of land in 1848 land lottery. My first bow and arrows were made just like hers were when I was about 4yrs old. One of the first "toys" I can remember playing with. It was my mother that taught me and my brothers to be " outdoorsmen" one of my other first memories is sitting in her lap on a lake bank catching blue gill as fast as she could bait a hook.
The large deposits of arrow heads were often from flint knappers leaving "culls", which were often recut to smaller heads. Kinda like me loosing spent primers on floor and getting blown out of garage during infrequent cleaning. My backyard is littered with them. That, and piles of boxes (empty case lot boxes!) of unsorted empty brass).
Facts are often stranger than fiction where archeology is concerned.
Remember, if you don't document when, where, and how you collected each arrowhead, or artifact, for future generations, it's just a collection of "pretty rocks"! Or broken pots or "old bones".
I once had a solicitor (prosecuting attorney) ask me what was the "big deal" about protecting archeological and burial sites. I asked him what he would think of someone looting and destroying his family's grave sites at the local family cemetery. He said "I see your point"...
Would you want someone digging up your grand mother, and selling her casket on the internet for $20,000, and you not getting a "cut"?