At least you found some of the bases. Everything I found yesterday was tips and middles. I left most of it.
here is a good read about brokes...
1st Americans Used Spear-Throwers to Hunt Large Animals
gives me the thought that most of these points were expected to be used just once.
The point is (eh- pun okay) brokes tell tales as well as whole points- or close. 'Course the bases are a little better on those lines... unless you know how to read the knap marks.
Yakker