You comment on so much plant, and so few blooms, and you have recieved some really great info.
I wondered while reading this thread, do you "sucker" your tomato plants? Do you remove the sucker branches on your tomato plants as they grow? This really thins the "bushyness" of the plants, which gives you a better view in the plant, and improves air circulation. It also allows the plant to conentrate on root growth and fruiting, rather than sustaining these free-loaders. It's rumored that they do not provide fruit, and I have been doing this for a couple years, and love the results. Follow up the "trunk" of your plant from the ground. At the base of each main branch leaving the trunk, there can be a new branch growing up in the "crutch". Snap these extra crutch-growers carefully off, (I've even done this on mature plants and it's helped!) and you will have less bushy plants, and more fruit, given there is still ample growing season left. I recommend that you try this at least on a few plants if you are reluctant. At the very least, you will get some more fruit doing this and the gentle shaking. Please let us know what you think of your results.
DaisyLou! Zone 4a - Heat Zone 5
"The measure of success is not whether you have a tough problem to deal with, but whether it's the same problem you had last year." -John Foster Dulles