I'm a 5' 11" player and usually play against people a little bit taller, or a little bit shorter. But, there is this one guy I train with who is a 5.0 S+V who's about 6' 6". He uses the height advantage a lot when he comes to net, since anything that is at his shoulder height he can slap it away for a winner with ease.
The best advice I can give it to his low, since most tall players don't want to bend that low constantly. Never attempt to lob, unless he's running forward while you do it. If you have pretty good accuracy on your passing shots, you should go for the achilles heel of passing shots: hit it to the shoulder of the racket arm. Most people don't know that this is a fatal weakness for players, since the forehand/backhand volley are unable to reach, and if for some reason your opponent moves over to hit the volley, the reply is going to be very weak.