Your "spotting" made the wife laugh Gareth :-)
I don't think it will glue well, it's sandy rock up there so you'd just be glueing one layer of loose sand to another layer of loose sand, unlikely to end successfully or atractively.
on a different note has anyone done papa lazarou. It gets 7A in the online guide I did this first go being disappointed not to flash it. If I can get a problem third go its not 7A I think a down grade to 6B or 6A+ is required. Anyone agree?