I used to go for winners almost non stop when the ball would come back to me , being a big guy and all. I always wanted to end the points quick. Id have good days and bad. As an accident a year and a half ago i started doing drop shots. I mean a drop shot on 70 percent of all my shots. I would chip serves back and then on the next shot go for a drop shot winner. Even if they knew i was going to do it, they still couldn't hit it. Probaly because i would clear the tape by just inches and then it wouldn't bounce. Slight spin but not extreme. I'm not sure why more people don't do it, but its my best shot now and half the time people won't even run up after it. You can only do this in singles. The doubles opponent at the net would hit or slam it away for a winner. But works for me in singles. Its usually effective when you aim on the ad side about 3 feet past the net , but not sure why. Now if i can just get rid of my horrific second serve. Just doesnt seem right to be able to play your best tennis at almost 40. Just makes me wonder what i could of done when i was younger.