Got a new variety of Determinate tomato called 'Legend' and we're going to try them over at the school garden. We were supposed to plant them yesterday but got rained out, so I'm going over there today to get them put in. They're too big to wait two weeks, (next week is Spring Break) so I've got to do it. Hope the weather holds! My Earth Boxes will all be planted this weekend with peppers and tomatoes, too.
It's an early variety with resistance to the blight diseases as well as all the usual letters and numbers. Sounds like a great one for Florida.
Jean, I haven't used PVC, (I have lots of bamboo) but you could use elbows, and then you'd have either a V-shape or a square support. Don't forget to paint or cover the PVC somehow if you're going to keep it out in the sun, it degrades pretty fast.