They measure the boats overall lenght and they put you in a slip that size or the next bigger... and charge you per foot I believe.
They also have on the hardstorage for smaller boats with a ramp right there. Not sure what the max length is there though or pricing.
As you noted, we've had quite a bit of cold weather lately, and the bay temp is in the upper 50s. On the other hand, the Gulf is in the 70s. A run of warm weather will push the bay back into the mid or even upper 60s, making it a much more hospitable place.
But most nice weekends you will see quite a few boats out. Just not a lot of swimming...
San Antonio/Port Aransas, TX
I wasn't born in Texas but I'm getting there as fast as I can!
19 degrees (high), white out conditions and my truck is being pulled out of a snow drift
as I write... I am not happy with Kansas right now and ice stuck to the side of the keel of my sailboat is just not right!
Confidence is going fishing for Moby Dick in a row boat and taking the tarter sauce with you. (Zig Z).