I’ve only got one winter so far, and an Intex Ultra XTR, not prism, but I left mine up last winter. Drained about 4-6” below the lowest opening in the pool, removed all hoses and put the pump and filter inside. The filter is heavy and doesn’t need to go inside, put the valve in winter mode and remove the drain cap to let it drain before it gets to a hard freeze and it should be fine outside. That’s what I’ll do this year. I only put the filter inside because last year I waited until a hard freeze to winterize so the filter didn’t have a few days to drain properly before a freeze.
I also didn’t cover, got some leaves in there I had to net out after it thawed but otherwise no issues at all.