Depends on the occasion. If you get a good serve to return then you might consider attacking (especially second). Otherwise, depending on your groundstrokes, bide your time and look for opportunities. The difference in philosophy with SV is how you attack. Instead of looking for a short ball to destroy *which is still encouraged* you look for an angle of ball that you can follow in with 'the chip and charge' or just a shot that will result in a feeble answer.