I always think of you when I see an Owlfly. They are so cool. Thanks for pointing them out to me.
Most of the lacewing eggs I'm finding this year are solitary. Last year I found them in groups. This your I've found a few groups and lots of single eggs. You might try going out and looking at the edges of leaves for a single egg stalk. FWIW, most of mine are on hackberries this year.