Most of SLCs mountains are done unless you hunt hard which you should have some BC knowledge for, main chute at Alta still goes and is pretty safe avy wise, I’d advise you to not ski it noon/mid day especially if it’s baking hot out but otherwise it’s skied up enough so it’s pretty packed in and maybe a few turns will send a little baby sluff before it stops on a mogul, but a sunset ski is very nice on it. Just expect rocks, maybe shitty skiing, and a lot of walking, honestly without a decent setup it can be a huge bitch, I’ve done late season hunting unprepared and not sure of where I was and it’s not fun so be careful where you venture it’s not as easy as it seems sometimes.
definitely get some education and backcountry experience if you can, overtime you’ll know where to go when the lifts stop spinning for a while and know how to go about skiing it.