I was using a 5/8 fire so pretty close I think.
Like someone mentioned earlier in the thread, the Quads were a good teaching tool but I think I've outgrown them. They're good in their own right but all this marketing about how they're as agile or more than for example a 10' profile is just not true. And that's not unique to the Quads. I tried the "most agile" Elite SCS which was marketed as being more agile than a 10' - also untrue.