Palmetto Bass, the striped/white bass hybrids, were still found in the latest TPWD 2015 survey but it is referred to as a low density population. Apparently, the actual intended stocking of them ceased decades ago but some where used in a cold water emergency cooling reservoir . . . and they escaped creating the sparse population in the main lake.
Sounds a bit like the theme from Jurassic Park!
No white bass, no SMBs, no walleyes.
The report mentions it assumes there is good forage in the lake based on the health of the LMBs and the channel cats they are seeing.
Wheeler Branch is way better suited for SMBs I'd think than Squaw. They are in there; tough to catch. I hear about a few caught each year.
I think Stetson has had a few trips to Wheeler where he has caught several.