1) When I closed last fall, I drained to waste w/ both the skimmer and mains until the skimmer started sucking air, then closed the mains until the skimmer line was dry and the pump lost prime - then immediately closed the valve for the skimmer, killed the pump, and added antifreeze and gizmo to skimmer. Thought this was a nifty way to completely drain the skimmer. Did the same thing when I closed a few days ago. Anything wrong w/ that? Everyone's pump runs dry for a few seconds from time to time, so I'm wondering if there's any harm here?
2) Closing, Shocking and Polyquat: I've read threads here as well as at Pool and Spa Forum. Water was crystal clear last Saturday, when I vacuumed thoroughly and shocked heavily. Brushed Sunday morning, added polyquat Monday morning and vacuumed again while draining Monday afternoon. Used a compressor to blow the lines, added antifreeze, return caps, gizmo, etc. I didn't test FC before adding polyquat Monday AM - I'm certain it was pretty high (I'm guessing 10-12ppm), since I'd shocked heavily Sat PM and water temp was 63F, CYA was 50. Should I have waited another day to allow FC to drop more? I recall waiting an extra day last year. I guess I'll know when I open next April.
Thanks for any feedback,