I'm going to echo what CDR said. You spend too much time way out of the draft. If you can stay super duper close to wheels. It will save more energy then you can imagine, and hard efforts will suddenly become soft pedaling exercises (i've ridden wheels coming into a sprint at like 35+ mph where i'm so close to the wheel in front that i don't even have to put weight on the pedals).

Also cornering. You seem to be losing speed/position in every corner. This shouldn't be the case especially considering how wide the field is. if anything you should be charging into holes every corner so the out of the corner jump is easier.

I might hook my virb up tonight for my training race, but i don't think it would be very interesting