SUP is very hard to do, and is a blast in small waves. I learned and surfed in Hawaii for many years. I have ridden the real waves in Hawaii, and have to say SUP is not a old man's version of surfing. Heck you have Laird out there catching 20 foot waves out there on a SUP. That is FREAKING HARD TO DO! It's much easier to catch that kind of wave with a regular surfboard.
I will have to say that the waves in Florida are not that great but then again some of the best surfers in the world come from Florida. So yeah it's a flat state, but without this flat state you would never have Kelly Slater, Corey Lopez, Yancey Spencer, etc. So it can't be that flat.
Awesome picture Chris!