I have read the other threads... seems to be mixed opinions. My solar cover covers 75% of my pool... I have another that I have not gotten around to cutting to fill in the other areas. When away for extended periods of time (a week or two) would it be best to leave the cover on 75% of the pool to cut down load on SWG? I'd get water to shock level first... would the 25% of the pool that is open and the pump running help to keep CC from building up? Any drawbacks to this?