The Golden City of Iroquois Oral Tradition
Perhaps about two thousand two hundred years before the Columbus discovered the America [708 B.C.?], and the northern nations [north of the St. Lawrence River?] appointed a prince, and immediately repaired to the south [of the St. Lawrence River?] and visited the great Emperor who resided at the Golden City, a capital of the vast empire. After a time the Emperor built many forts throughout his dominions and almost penetrated the lake Erie; this produced an excitement, the people of the north felt that they would soon be deprived of the country on the south side of the Great Lakes they determined to defend their country against any infringement of foreign people; long bloody wars ensued which lasted about one hundred years; the people of the north were too skillful in the use of bows and arrows and could endure hardships which proved fatal to a foreign people; at last the northern nations gained the conquest and all the towns and forts were totally destroyed and left them in a heap of ruins.
Bonaparte, Darren, `Creation and Confederation`
The "evidence" of what kinds of weapons were in use is the size of the points. Very small points are "darts" used in blow guns. Very large points were used on spears of the sort thrown by the Atl-Atl. Mid-sized points, which don't begin appearing in significant numbers in North America until the 600-800 period, were used on arrows (as in bow and arrow technology).
You can look at folk tales and if someone's talking about "arrows" that means later than 700 AD.
That brings us back to the question of whether or not bow and arrow tech was "spread to the Americas" by Old World visitors, or was an indigenous invention.
There were certainly plenty of opportunities for the bow and arrow to be brought here ~ so why didn't it happen? Or, was it as late as the period when the primitive Swedes obtained the design for clinker built hulls from the more advanced Sa'ami?
Rather like the chariot, upon its invention was the Viking dragon boat immediately put to use finding new Western lands?