Re: how cold is winterizing winter?
Most people winterize for long periods of cold weather and long periods being un-used.
For outboards:
Winterizing can be as much as running the boat in RV anti-freeze to get all the water out and what ever is left will be RV anti-freeze, while running the RV anti-freeze they 'fog' the motor with a fogging oil, sprayed into the carbs while running, it's a spray designed to coat the inside of the carbs with a lubricant. (You would have a hard time finding it in Texas)
Then they would remove the plugs and spray some more fogging oil into the cylinders.
Put the plugs back and see it next spring!
I live in Eastern NC, we get overnight freezes weekly, I leave my motor leg down so any water drains out, there's very little left to freeze.
I top off the tank and use Marine Stabil.
(You should be using a gas treatment ALL the time.)
Un-bolt the battery terminals and keep a batter tender on them.