A couple of things, Rod.. the state agencies have recommended LMB in the southern half of US because their books told them SMB need deep, clear, rocky water, which is incorrect. Best growing temps are the same for both but maybe (I say maybe because I have no documented proof) the SMB can't take the highest temp extremes in the south country-maybe..
As for spotted bass, I have 3 in my main pond, stocked at 6-8" and I haven't caught one since (stocked 2 yrs ago).
Spots are equipped to locate craws but in larger bodies of water where present, they tend to be more shad dependent.