Coolermaster makes one that would have been perfrct for that laptop... the X1.
Puts a fan dead center on the laptop.
They have another model I believe that has the venting to the sides for the laptops that have their intakes more towards the edges.
I may be reviewing one of the side discharge units (as I have 2 Dells whose intakes are on the back corners), and I will let you know what I find out.
I've always wondered myself too....