These are questions I am often asked about clarinet or saxophone ligatures, by blog readers or by my students. Is there a ligature that can accomplish _____ for me? If you are looking for something to hold the reed onto the mouthpiece, then yes. If you are hoping to achieve something loftier, then probably not. ... 
Tough love for teachers of beginning clarinetists. 
If you are getting less than 80% playable reeds from the boxes you are currently buying, buy different ones. 
Here are some videos from my recent Delta State University faculty recital. I enjoyed tackling Brett Wery‘s challenging Sonata for multiple woodwinds (flute, clarinet, alto saxophone) and piano, plus some little oboe pieces and the André Previn bassoon sonata. As always, the goal was to challenge myself, so, as always, the performance had some hiccups. But ...