Hi Sean,
In the end I did not go as I got bit bad bug and I talked to a regular at the track and apparently it has mesh all the way around that will get in the way. I passed a few email to the club about trying to get on the infield and they not got any free spaces for other photographers.
I don't know if you know sports photography, I a regular grasstrack photographer very much like speedway if you would like general advice if you not a sports photographer. Do say.
I was looking at the testimonial as well, enjoy the racing.