i believe the best strategie is to go for the right pick. if you are too far simply dont engage, you will lose advantage instanly. also you always need to have the high ground, it is a tremendous advantage that nobody use really. also i believe just hiding the whole game simply to have a win in your stats isn't how it should be played, yes it takes skills to know when and where to move to stay hidden but whats the fun in doing so unless you challenge yourself to do it? you won't have a better aim, your building skills will still sucks and you won't advance.