You hatched 5 Unowns from only 30 eggs? That's beyond lucky. My husband said the statistics reckon during the event it took around 50 10k eggs to hatch one unown. We hatched more than that and still came up empty.
I walk our puppy at least 3 -5 km each day and have Pokemon Go linked to my iWatch so tend to walk my eggs pretty well. We also used multiple incubators last week. Possibly a waste of coin but we really wanted to see if we could get one.

I'm hoping to get a Tauros or Mr Mime this week too as they're the ones I am missing. Luck being as it is I'm not holding much hope.