[markwilliamson2001]

For me the straight is the easiest part of the track, and should go at the back of the track...this means the harder sections, and generally jumps are nearer the rostrum, and in better view.
However, I would also recommend that the track be in 'landscape' view where possible, since overall distance from the rostrum, and depth of view should be kept on the smaller side..i.e. More wide and shallow than long and thin if you get my drift...