I have a traany cooler in the same place.. I have always been sceptical as to how much air does get to the cooler... I cut a piece out of the inner wheel arch behind my tranny cooler to allow as much air around/through the cooler as possible.. I put some mesh in the hole to stop rocks etc from hitting the cooler.. I reckon on the day take out the foggie, that would be your best bet, cannt see much else you could do though, maybe one of those fans that some coolers come with maybe?? Good luck on the day..