Tony Robles just discussed this in the recent Predator pool school, and confirmed what I had tried a few times in the past. He said he considers any break not hitting the 1 ball full a cut break, whether it's hit soft or a bit harder. The main variety is setting up the cue ball on the headstring, and say 1 diamond left of the spot. Instead of breaking into the 1 ball full, aim for about a 3/4 hit on the 1 ball, and use low outside english to bring the cue ball to the side rail and back to the middle of the table. That's about what I've tried with a medium speed (NOT soft), and you get good control and good action on the balls. Of course from there you can adjust speed, hit on the 1 ball, starting location of the CB, etc. until you find you are making the wing ball or 1 ball consistently. And of course you can only do this is soft or cut breaks are allowed in the league/tourney you are playing in...
Scott