What effect does the solar cover & temp have on bleach?

I've noticed that the pool temp is jumping into mid 90's that I'm using much more bleach than normal due to day time loss (holds FC overnight) air temp getting in the 90's (CYA30 FC 3-6 alk 90 ph 7.5 Cal 200 water is crystal clear IG Vinyl 30K gallon in PA).

I've notice the sun will burn off the bleach quickly without the solar cover. (Recently shocked to 15ppm to clear cloudy water after 4 days camping - it will hold over night but will burn down to 8 - consistent over a couple days (i.e hold at night - drop in day.) Pool was clear w/i 1 day and I maintaind SL for a few more and added Poly after it cleared.

I've noticed that if you leave the cover on for a few days without sun it may start to get slightly cloudy even if you are maintian FC levels.

I'm looking for the best strategy for solar cover and maintaining bleach (preventing algae) while on vacation. (Neighbor will add bleach every evening for 3ppm and run filter 24x7 but no testing).

Should I leave solar cover on or off (not looking to heat or save heat) - just maintain FC and prevent algae). Should I only leave half on ( I have an L shaped pool that require two covers -- I can only cover 1 section w/o problem).

Thanks in advance-- this forum advise is great.