I will never be a trophy hunter or mature buck hunter exclusively. I enjoy hunting too much to let it take the fun out of it.
I've heard that said before and it puzzles me every time. [&:]Trophy hunting it not enjoyable?
To answer the original question, I try to target bucks that are at least 3.5 years old, I'll let the peanut gallery decide if that is mature. In regards to does, mostly I will try to take a larger one, but given some of the places I hunt, ANY female deer is putting herself in peril if she gets within range.