Fitted one anyway and tried it out yesterday!
The ramps are always busy at the weekend and very crowded.So mooring between two boats was always a 'frantic'to and fro or having to result in springing in.
The knob makes lock to lock so easy ;especially with hydraulic steering; and made the whole process much easier.
Does get in the way a little when bouncing over waves and hanging on as normal to the wheel;but in all ,well worth it.
Knob was the one made by Edson with two sets of Delrin ball races and was smooth and solid.
No issue with kill cords as wear that around the knee