Might ask for a couple of names.
There are some good guides for all three places but I am not sure that there is one guide for all three.
Make a list of questions to ask them on things you want to do and how you want to do it. Wade, drift, artys, live bait, tell them what you want. To load the boat or learn the bay and how to fish it or what ever and what you want to fish for.
Be clear and over specific on what you want and do not want so they can tell you what they can do or not do and if what you ask is do able or not inc being out for the whole time you pay for.
Call Trout support and ask him since he has fish with many of the different Texas guides. Also run your list of questions by him too. If you have not looked at some of his DVD's then you might look at the ones that are relevant to what you want to do before you go out with the guides.