Many clubs give compensation for taking part in support duties, such as being race officer or driving the safety boat. This is achieved using one of the redress (RDG) status codes described on this help page.
A common one is option RDG 2, which gives the average of the points that the boat received in other races in the series excluding DNC results up to the maximum number of races it is allowed to discard. This seems pretty fair as the boat will neither be given an advantage nor be penalised for doing their bit to help the club.
But people often forget the bit about only excluding DNC results up to the maximum allowed by the series discard policy. If a boat were allowed to exclude any number of DNC results, you could have somebody getting a first in a single race in a ten-race series, then getting RDG of 1 point for a race duty even though all their other results were DNC. That would not be fair.