What I Did On My -3
The attached pics are for ailerons/elevators & a 2-piece, 1" web strap (velcro overlap closure), with insulated, spring type laboratory clamps on each end, for the rudder. The cross "brace" is to stabilize the aileron movement in a high wind environment - not always used.
The web straps "clamp" onto the rudder cables at the seat bulkhead, and then go forward and wrap around the stick, then velcroed after "snugging" them together.
The lab clamps (McMaster P/N 5164A41) can be adjusted tightly enough to secure the rudder cables against the bulkhead.
HFS