turbo putting is great for wooded rough courses where you might have an obstacle near the basket, and you end up behind it. i practice it now and then, and i've saved a stroke every odd round.
further than 20' out, i've found it does help to use a less stable disc; the disc will want to fade left to right for a righty using an aviar or wizard. you can just play the fade if you practice it, or try using a less stable disc. i use a beat pro-D buzzz sometimes. don't be afraid to try every disc you own, it's a trick shot to begin with so no worries if you putt with a roadrunner or something. if it goes in it's the right disc.
also, if you practice turbos now and then, use an obstacle. i set up my practice basket near a swing set to shoot over (and through for accuracy in trees).