I think this calls for a big “decorative” boulder or two in the yard.

Not my cup of tea. I go for a day every 4 or 5 years, if only to remind myself why I don’t go every year. Way too peopley.

Bug zapper flyswatter. Like you can buy at Harbor Freight for a few bucks. It might not be a terribly effective solution to the overall fly population, but in terms of grim-bloody-vengeance-per-dollar, it’s one of the best investments I’ve ever made.