Yes, me too. I’m 67 now, and I find that my go-to board is my 9 foot round pintail. But its old and beaten up, so this will hopefully be its replacement as my new daily driver.
I definitely don’t consider this a noserider, although you can trim these boards from pretty far forward under the right circumstances. But def not going with a concave in the nose, belly instead - the exact opposite.
I eventually added quad option to my 9 footer, and I liked it as a quad, but finally went back to single fin. I do think it is faster as a quad, at least feels that way to me, but I still prefer riding it as a single in most conditions.
As far as rocker - I can’t claim to much beyond just picking a blank with a rocker that looked good to me for my shape - I didn’t want a longboard blank with a lot of lift in the tail, like for a noserider, and I didn’t want a flip in the nose like a gun blank, and I didn’t want the nose rocker to be real flat, so this is what I ended up with. Beyond that I haven’t altered the rocker in any way, so I hope it all works out.