We have a sponsor (Sierra Lobo inc) that allows us the use of their high speed camera. Its a very high end camera but I couldn't tell you anything more about it than that.
We used it in 2012 and 2013 and found it pretty helpful.
You could check with some of your sponsors and see if they have one you may use.
we uploaded some of it from 2012:
https://www.youtube.com/watch?v=pkIgCc0uCUo