Primitive Archer

Kevin, have her look up "Dr Jo, vertigo exercises" on youtube.
basically you lay on your right side and turn your head at a 45 deg angle for a 30 second count, then sit up straight for a 30 second count then lay on your left side with your head at 45 degrees for a 30 second count. Do 5 reps of these, twice a day. There is a little bit more but she explains it better. I was amazed how quickly it worked for me with only 3 sessions. I'll be at 13 sessions when I do them tonight and will continue for a while.

Wow, this is quite a selection!  Here's my humble offering:  A set of pronghorn rawhide backing strips.  Each is 2" x 38".  Pronghorn hide is very thin and easy to work with, almost transparent when dry.

Not sure what you mean by "fire hardening".  Heat-treating is essentially the fire hardening of wood.  If not done properly though "heat-treating" can be nothing more than changing the surface wood's structure and that really does nothing for a bow.  Proper heat-treating of a bow is a process that takes several hours to do.  Osage and BL certainly benefit from heat-treating but they react a bit differently to heat and you have to keep a close watch on what's happening with the wood, I suspect it may have something to do with the oils in the wood

"Fire Hardened"
Just using the terminology many have used online to describe the process of hanging a bow over a bed of coals and baking the belly of the bow (usually a white wood) pretty substantially. I guess it is just another form of heat treating?  I will defer to you Marc, you have learned and tested more with heat treating than most everyone here combined.
My original curiosity was more about whether Osage benefitted from doing the same type of heat treating/fire hardening as is done with hickory - as an example.  Sounds like it can - but needs to be done more carefully than other woods if I'm understanding correctly?

Thanks y’all! Appreciate the help! I was getting in my head about whether I was close or not 

The sled