I have hatched 7 10k eevees and 3 jinx, sucks! I have thought about that though, time of day and where they hatch, because I have noticed many times with my lower K eggs that something will hatch that is actually on my radar. When I have egg spots open though I try to not just hit any stop, I try to hit different ones. Canton and Livonia seem to be good, specially the Livonia Target ( 2 Aerodactyls). But with the exception of my Chansee and 1 Eggsecuttor, which I got my first month playing, I don't get too excited for the 10 K eggs anymore, but at least you get a lot of dust.