We had our 1yr old pool taken down and moved to our new house yesterday and today. On my last pool build a year ago we had rolled shingles put down with sand ontop of that. This time we used our old liner in the bottom a layer of sand and then armorshield with cove. Last year the weather was warmer at this time and we opted to fill the pool completely and get it balanced with salt and what not. My BIG question this go round is should we fill the pool completely or fill just below the skimmer and return...then put the winter cover on until spring? Do we leave the water as it is and not add anything until we take the cover off?