If racers received free racing from a board member's comp then it was prior to 2009. Former President, Tony Baker, enacted the operational procedure within the Board back when I was still VP that only family members could use a board member's comp'd racing credit and that has been the case up until events of the current season . If board members did not use their comp, they would receive an additional $100 in pay for that weekend.
And I agree that it needs to be specifically spelled out in the rulebook.