playing bounce can be very easy on slower decks. Once the batsman works out you get a bit of bounce he's likely to plonk himself on the back foot and look to cut/pull from a goodish length. Played against a few bounce spinners particularly indoors on matting and it does drive them mad when you pick them off a apparently good length. They end up bowling too full and getting driven.
Best of both worlds is to understand what you are actually doing with the ball and make subtle adjustments so not every ball kicks up. As a variation, lowering the arm or pushing it through quicker can help keep the batsman honest. Ideally imparting more side spin would be a real benefit.