Sometimes it takes several hundreds to get a really really good one.
Post up on the MRA and keep this thread bumped up. I bet there are riders who would help. Some people roll to the track solo and would love company, especially in exchange for free pics. If I wasn't already sponsored by a photog, I would be interested. Not only that but my truck is always packed lol.
Good luck and if you want to make it happen, don't give up!