Wowzers, Davey! I was right, that IS the "nice rest day crag" we played at last year for a few hours. Now to wondering how many other climbers passed that way and maybe climbed a thing or two and moved on. Kinda gritty in places. We climbed two trad lines, and the left one (by Roger H. and Ger) may well be the same as your 5.8 number. Ger can chime in to confirm, or you can chat in the gym.
I struggled up an all trad shallow right facing corner further right off of the ramp, figuring it was 5.10a-ish, but I'm always out of shape, so it was probably easier. The belly button cave did look fun, but we didn't get to exploring it, being kinda short over there.
Whereabouts was Rocky's Rocket Ride? Was thinking of calling the main formation "The Jabberwocky", if it doesn't already have 4-5 other names given to it already by previous parties since the 70s, like most of the Balls!
Don't have time right now, but I'll have to post a pic or two eventually.