Nice!

I'm going to try to fair a slightly different way. Using a long (1-2m) aluminium batten with about 3 ppl along it bending it against the hull. Only do one sweep at a time on a particular area so you don't stuff up the previous sweep. Cover the whole area you want to fair then sand. Repeat until you're happy with the fairness. I've seen this done on larger boats and it works well. I'll let you know how it goes.