Two methods of measuring daily catches by headboats that fish the outer Continental Shelf off North Carolina and South Carolina are compared. Headboats are those commercial fishing boats where recreational anglers pay for a day's fishing on a per person, thus per head, basis. A dockside creel census estimated catches as only 47% to 87% of the catches, in numbers of fish, reported by crew members in logbooks. While the comparison suggests substantial bias in one or both techniques, low cost favors use of logbooks.