Recently I have been trying out blocking my returns of fast first serves very high and as deep as possible. Is this a good play? I try to keep the block return very high, so coming in to volley would be impossible if the opponent is not John Isner, and it also hangs around in the air for ages, so I have lots of time to move into position. If I get it close to the baseline, my opponent basically has to build his point from neutral. My question is, is this a good play, or will I just get abused for it when I face better players?