I’m sure it is okay, but I feel defense is mostly about wearing down other teams...I got kicked out of my last gym yesterday at 1142pm...okay maybe I’ll see some blue gyms when I’m driving 13 miles to work...I just saw one out of 20 or 25 and I did a raid there.
My time was too limited to make my own gym (yellow is everywhere right now). On the way home from work I’ll have to find/make 2 or 3 gyms to get my 50 coins.
In the morning all those enemy gyms looked tall but they could be pidgeys and weedles, still wouldn’t matter though. I’m driving keeping an eye out for my color and/or a raid boss.