Hey Gregg, I like a single hoop and I think the third leg looks better as well - not sure about the boot configuration int he new chassis, but on the old one the third leg comes down on the top section, and doesnt encroach on the largest flat area - its also quite off to one side. I have a shot in my gallery of this.
I think there is some sort of safety requirement at the nationals if you go under a certain lap time about having a roll bar of a certain height and affixed in 3 places. Someone can confirm Im sure.
Cheers.