I improved the first version of the Sidewinder. Take the screws out and put heavy weight (I found a piece of heavy metal in DH's shop that fit) in the case. It keeps the winder very sturdy and upright. Also remember the knob, that has no marking at all what it is, will adjust the tension of the winding. I haven't seen the newer model of the Sidewinder.
I was surprised how many do not know that in some older machines you have to turn the wheel on the fly wheel to disengage the clutch so the needle won't sew when winding a bobbin.