Water is very important with tomatoes as they like it hot, the Tomato Guy said.
He waters his plants three times a day - before he leaves for work around 6 am, again when he gets home in the early afternoon around 2 pm. and again in the early evening around 6 pm.
He told me that he went on a three-week vacation this summer and a very responsible neighbor watered for him, it wasn't the same. He didn't think waterings were skipped or incomplete, but his tomato plants were never the same. Still, he got a bumper crop.
This watering schedule seemed like trouble to me with my active lifestyle. It seems like a watering system tailored to his specifications would be a good project to test out. Wonder what he will do for his next crop. I will keep you posted.