As far as I know, they haven't made any tickets available to the public for the judges' side. Which is not usual for French GP events - tends to be reserved for VIP's, guests, officials, French clubs etc only.well crap, all the decent seatings (= judges side) seem to be gone already, so much for the idea
Having said that - if I remember correctly, they did put some on sale for Bordeaux last year, on the judges' side - for the Saturday sessions. But it was quite some time after ticket sales began... and as misfortune would have it, there were no competitions on the Saturday anyway...