Oh, nothing more scientific than the expenditure of additional $$ by junking my perfectly good Tomken winch plate and going to a Hansen bumper that mounts the winch directly on it
This was good for lowering my winch in front of the radiator by 2" which helped alot.
At one time I became really concerned over mounting anything in front of the radiator so I installed a billett style tranny cooler under the Jeep rather than blocking up the grill. My fears have been confirmed as I recently added a small stacked plate cooler for my power steering/hydroboost set-up and the only real place for it to go was in front of the radiator - I now figure that was good for 5 degrees more in operating temp on the freeway :sad: