The most detailed article technically I've run across, but usable tips and insights that help even a novice like myself.
Thought this was of interest, "Ripe tomatoes only have a short shelf life and as soon as they begin to turn red, the weight and size gains generally halt. Then it’s time to have the tomato officially weighed, photographed, documented, witnessed and certified as a world record!"
Russ Landry, Maximum Yield Gardening Jun2014
http://maximumyield.com/attack-of-the-giant-tomatoes/