If you leave production at 11 ticks, it means you will have resources "idling" at your planet for quite a few ticks, giving ample oppurtunity to be cov-opped.
Until now, I've been using Mining/war/production, and switching to res/mining/war when starting a research (xan penalty
), but now all i'm researching is the roid techs, it will stay with min/war/prod i think...