Actually trying to answer your question about fruit to foliage, I always keep a few leaf stems going as I believe they still collect the rays of sunshine, and therefore help the ripening process, so I've chopped off about half the numbers, and made sure the fruit is pulled to the front of the vine for what sun they can get.
The 'Shirley' are bounding ahead now, with the 'San Marzano' coming along nicely, after being persuaded to show themselves in front of the leaves...
As we've had two great days of very warm, sunny weather (whooooopeee!), there's been a huge surge in ripening!