I would like to create some animations for tying knots. If I use a curve (set off controllable null positions) and use sweep, I can create great still images. But if I want to animate this, the curve length is not constant and this creates flaws in the animation. I want to keep the ropes very smooth looking (the way I can with 500-100 resampled points on the curve). Would it be best to create 500-100 bones and animate that or to have the rope be a cylinder and have it deform to the curve?