all u can do is try and drop the cooler down as low as possible, and only space it out the minimum amount needed.

bending the catch is all well and good, but will run the risk of it not latching properly, and then flinging up if it isnt pinned

personally i chose to stick with the fans on the front, plenty of people have no problems with cooling like this, and if your doing the cooler black anyways, u cant exactly see the fans that blatantly