055166K - thanks for the advice - the issues you list are exactly what we're worried about. Current arrangements are fairly lax and I was asking the question on behalf of the airfield licensee, who has recently taken over operations at the field.
Really, I was hoping to find something in black and white that we could quote to those folks who don't see the point of filling in a line on a bit of paper before they go flying - maybe we'll have to convince/ cajole another way...