Peeling the center fins of the heatsink (takes a few hours of patience with needle nose pliers/medical forceps) and zip-tieing a Arctic P12 Pro (or any other 120mm high static pressure fan) to it works pretty well. Note that you should probably take the heatsink off while doing this to prevent metal shards from shorting out your board (removing the heatsink might necessitate redoing the thermal pads/putty).