I have started returning from a really deep position, 6 feet behind the baseline, sometimes even further back. It gives me more time to react and allows me to take a swing at the ball. Basically I aim to get it nice and deep; resetting the point. So far I have been fast enough to run down attempted short and drop serves. My opponents have struggled to take advantage of my deep position with slice serves. Allot of the time they either fault into the net or don't get it wide enough. It has also made getting back serves with weird spins easier, by the time they reach me they aren't turning as wickedly. One of my doubles partners criticised me for doing this, but he was also putting allot of his returns in the net from his much more advanced position. Is it OK to return from a deep position?