Tim Ferris talks about this problem. His solution was to look up the 'Silver/Bronze' people, not just the 'Gold' people, in an event and just email them. I think he went to a 'silver medalist' in some surfing competition for lessons and claimed that 3 hours skype sessions were only $120. Ferris' reasoning was that the silver person was only 0.1% 'less' than the gold, so the price differential is totally worth it for private lessons. Also that most 'silver' people have never done private lessons in their expertise so they are very willing to help. It takes like 5 minutes of googling for this and writing some emails, maybe 30 minutes in total including negotiations for payment.