Tug-of-war?

I have a Doberman and play tug of war with him. I have heard tug of war is okay and tug of war is horrible, so which is it? I ume if you play tug-of-war is that you must teach it the command of "out"/"drop" which I am trying to reinforce, getting mixed results any solutions? I ume treat trade-offs would work okay. Also my dog is not the most coordinated and will end up mouthing someones hand while playing(tries to get toy but misses). Any suggestions for that? I cannot punish him for that because it is an accident but I do want him to be aware for when he gets bigger that is a definate no-no.