I am still somewhat beginner at park and early intermediate in general riding. I like to spend most of my time trying park so I put my front at +12 and my back at -9 with a +1.5 from reference front and back. May experiment with it some this year since I'll finally be spending a full winter boarding now that I moved to SLC. Used to just take vacations for a few days once or twice a year.
Maybe a decent starting point for half/half park and riding do a smaller negative angle on the back? Maybe around +9-+12 on front and drop to back to like a -6 or something.