Re: Perpetually dirty pool. Drowned ants. Dead grass. FEMA to blame??
Surface debris is arriving by air, so your floaties are naturally occurring environmental issues. The reason they're collecting at one end of the pool is likely due to the circulation jets not being adjusted properly to "whirlpool" the surface water back towards the skimmer.
Check around the perimeter of the pool, just below the water line, there should be adjustable nozzles, set all the nozzles at roughly the same angle, in the same direction, this will drive the surface of the pool in a whirlpool effect, and the skimmer should start collecting the surface debris.
If you have cross jets in the pool, these will hamper the circulation of the surface to roughly half the poole length, so you'll naturally have more debris on one end than the other. If these return jets can be directed, adjust them into the same circular flow that all the other jets flow.
BTW, if the adjacent vacant property is a problem with pest or other infiltration issues, contact your county controller. Regardless of who owns the property, it is generally against the law for it to be allowed to affect the surrounding properties, whether that be water run off, pests, fire hazard, etc.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!