Can't take full credit - I did get a referral. But while a simple search for mohel in Houston did net a few results, including one who was featured as one of :"America's Top Mohels" (JTA 2014, in one of the classic reasons why "top" anything lists are kinda silly) I can see that the variety of options is not like what people can find in Florida, where I live, or in New York.*
Of course, many people just call the local mohel when they need to have a bris. In some towns there is one mohel, and he is beloved by everyone, or he somehow works for everyone.
When that is not the case, I am happy to make the trip. After all, "Have knife... will travel!"
*I found out that this mohel had to leave town for very crazy reasons. Thank God he is OK, but his departure left a void in the Houston mohel scene.
See here for Houston round II
