volume rocker issue

[Mike2105]

Does anyone else find it annoying that you constantly turn the ring volume up our down inadvertently by knocking the volume rocker? I've tired 'Locker pro' which does the job well but there's is no function within it to recognise the 'do not disturb'mode so consequently when the phone wants to go to silent mode at the preset time, locker pro doesn't let it.
Any ideas? Or is there a better app??