Well its certainly the case it focusses upon nighthawking scheduled sites (as did the previous survey).

But of course, widening it to include the accepted meaning of nighthawking - which includes detecting on someone's land without permission - would put the government in a place they don't want to be -

If there are one million unscheduled sites and you hold up nighthawking on those (using the "no permission" definition) as "illegal detecting leading to damage" you effectively acknowledge that ALL other detectorists, who DO have permission, are guilty of "LEGAL detecting leading to damage". Which is of course is the sad but unacknowledged truth since every single one of them researches and seeks out those "productive" sites and hammers them.