Do I really need to winterize my above-ground pool beyond just covering it?

Yes — freezing water expands and will crack your pipes, pump, and skimmer if you don’t take it seriously. Lower the water 4–6 inches below the skimmer, drain the pump and filter, blow out the return lines with a shop vac or compressor, and plug everything with expansion plugs. Skipping the blowing step can cost you $200+ in repairs.