Thanks for the info guys - made me feel a bit less depressed about my lack of wind range

I'll try the front line trick next time I'm out.
FWIW - I thought the 16 was a massive kite when I got it as it dwarfed my 12..I felt very inadequate on the weekend when a guy dumped his 20m X3 next to mine...it was at least twice as big as the 16 to look at - he reckons anything over 15 knots and it turns green and grows horns - you gotta get off it quick when the wind blows unless you like being teabagged against your will.
...that name again is Mr Plow