Install a rudder angle indicator. The sending unit is attached to the rudder post and then there is a remote indicator. Garmin is one of many makers.
Knowing how many turns of the helm wheel stop to stop, 1/2 the number of turns should place the rudder at 0 angle. Put a decorative cord on the spoke when the rudder is centered. You just have to remember to count the helm turns.
The meek will inherit the earth but, the brave will inherit the seas.