If you're not a flat/shallow water "specialist" like I am, Corpus could work very well for you because it offers all different kinds of water conditions. It's a hassle for me because living close to the flat water involves a lot of compromises, but if you're willing to open up a bit, there's a lot more opportunity.
If Corpus is still a possibility, take a look at these
wind journals. People describe their various sailing days (wind, equipment, etc.), most of them in Corpus, and it could give you a good idea of what sailing there is like.
Murphy, for example, lives on Padre Island and sails at Bird Island pretty much exclusively, and pretty much every dang day (he's retired). Alissa sails a wide variety of places, almost never Bird Island. The two Millers live in Austin but go to Corpus frequently to sail and they mix it up between flat and non-flat water. Tamay hasn't put up a log in a long time, but she was definitely not a flat water type and sailed a wide variety of the launches there.
It's not a comprehensive representation of the people there, but it's better than nothing when dealing with an unknown place.
The journals could also give you an idea of how "sailable" it is in the winter. It does get cold there, and I suspect the big wind in the winter is generally a norther. We got a couple of them in November that Carey went out in, but not me! That said, I've sailed in Austin on New Years Day before, so winter in that region generally isn't all that tough.
Then again, there's a lot to be said for the biking in Arizona in the winter. There were a few places we stayed where you biked from there, which is always nice, and if you're there around spring break time, Carey really enjoyed the Arizona Spring Fling, where they have organized rides in Tucson, Phoenix, and Sedona, working their way north over the week.
We're in Stanley, Idaho, right now, headed for Ketchum today. We tried to beat the snow but didn't quite make it, but Carey had what he said was a spectacular ride a couple of days ago in Stanley--snow all around but a nice firm trail and warm sun.