Kris Kraft,
Yes, the 22-2 started the 12 degree in 1973.
If you are looking for a shallow water boat that will "go in less than 12"" I would suggest the flatback. It will run and float in less water. But, it will not take a chop as well as the 12deg.
I do not own a flatback (I have a 73' 22-2) but I think the 8" draft is without power?? But, I am not sure. Maybe someone that owns a flatback can confirm this?
I was told that the flatback with power is somewhere in the area of 10" while the 12deg. with power is around 11". I am not sure here either cause I am just starting my rebuild.
Good luck,
Mike