I've got 5 active set-ups, but I typically only ride (these) 2 most of the time. Presently they are: 8.5 Theories UFO shape, Thunder 149s, F4 54mm & an 8.75 Polar P8 shape, Ace Classic 55s, F4 56mm.
The following are also in occasional rotation: 8.5 popsicle, Ermico stage 11 159s, F4 55mm, also an 8.5 cruiser, Indy stage 9 154s(?), Bones SPF 56mm, and finally a 10" 80s fish shape, Indy stage 7 169s(?), circa 2002 Spitfire Charred Remains (black rubber tires) 58mm.
That's it.
The main two change periodically, the others are mostly goofing around boards built from spares, so... maybe not so often for those ones.
'Bout to set up a Scram 8.75 squootball (squared football) shape in a minute, w/ some Thunder 151s & F4 54mm wheelers. SA sixth needless ride is just over the horixon, y'all.
Gonna make like Kool & the Gang and celebrate.