Killer thin Clovis...u could have nibbled the tip off down to the flute..lol..I kinda think they used relatively flat flakes that they pressure flaked a median ridge and a wide well abraded stout nipple...I've seen a lot of top notch knappers and several styles of fluting..punch, inderect pressure, jig, and copper bopper fluting..they all work..one tip they all say is to make several preforms first...increases chance for success!!! Great point either way...I'm here in Fort Jackson till tomorrow.. then drive home..sucks..I did Knapp a decent large 12" blade from Argillite but pictures too big to post..
Russ