I think you are over rating sponsorship. If you search there are many topics about sponsorship. Read them. From my personal experience, last year i was sponsored to fly radio control helicopters. Apart from the cheap stuff it really wasnt that great, theres lots of pressure to perform well etc, and ends up turning a hobby into a chore. I am no longer that interested in rc helis. Sure when I was 11/12 i would have died to be sponsored to ride bikes. It aint all that great though.