Watching the guys at the LHS fly all sorts of stuff, I never see them check to see if anything is correctly trimmed. They spin up the rotor and work the controls gently to see what the flight characteristics are, then they just fly.
It's exactly what FMB42 said. Just fly it.
If something is ALWAYS set wrong, trim it, but mostly these things just get flown.

Hover is good for landing and taking off, but other than that it just wastes batteries.
IMHO.
Or maybe not so humble opinion.
HAR HAR HAR