What does 'making good' a course mean?
Short answer
Actually achieving the desired track over the ground; planned corrections may help, but the result is observed
Course made good is the direction actually achieved over the ground over the stated interval; speed made good is the corresponding achieved ground speed. Corrections may be planned, but 'made good' describes the result rather than proving every influence was perfectly predicted. Revise this in Directions and Movement.
Quick check
What does 'making good' a course mean?