I don�t know any that specialize in Blue Cat.
Carl Bostic of Wet Hook guide service guides for cats.
Bradley�s guide service is another.
Michael Richardson with Lake Livingston Adventures guides on Conroe in the
Winter for Hybrids but is good with most species and catches some big Blues.

I don�t guide but fish most Saturdays and fish Conroe some and would take you out sometime if you just want to get out.
I fish for Big fish this time of year and it can be slow sometimes but you never know when you might hook a fish of a lifetime.