We are still growing the most beautiful tomatoes that both look and taste good... the tomatoes in the photo are from CUTTINGS. Our first crop of "mortgage lifter" tomatoes were grown from seed in early Fall. When the main harvest was over and tomatoes started getting small, I made cuttings from the mother plants, dipped them in rooting hormone and rooted them in pots.
If you want to grow large tomatoes in South Florida don't grow them in the summer. It rains too much and is WAY too hot for most varieties to fertilize and produce fruit. Spraying for disease and insects is nearly impossible to keep up with in the summertime. Summer tomatoes for South Florida include currant and cherry tomatoes. Preferably not hybrids. The closer to being wild the better chance you will have at growing tomatoes in the summer.
Unfortunately the birds like tomatoes too so we have to harvest them a day or two early and let them redden up on the counter. I wouldn't mind so much if they ate the WHOLE tomato, but they only peck at it.