I believe the OP was suggesting these targets for when you are in an attacking position. So he's not suggesting you hit a floater within the service line and expect it to be a forceful shot.
Nadal hits so many shots landing inside the service line but with the spin it still forces his opponents to stay back and doesn't allow them to attack. However, we cannot hit with that amount of spin, so our shots won't be as penetrating, and some people get scared and thinks that means they have to hit deeper, which isn't true. We can't hit like Nadal and neither can our opponents
Yonex RDiS 100 Midplus, Tourna Poly Big Hitter Silver 17 @ 54lbs.