Okay, so I play sitting strictly. I play cello style with a slight angle towards my inner thigh. Pretty standard for classical/arco. So I have been wanting to stand lately due to a back issue (car accident). I have tried the bent endpin (didn't help), and I can't get a good posture the same way as when I sit. I think what I would need is almost a seatbelt or strap on the bass to stop it from rotating. Does anyone have any helpful suggestions? Keep in mind that I wanna stand and hold it in front of me. Not off to one side.