blower cooling engine directly or via oil cooler

On Saturday it was time again. Let a benefit event spread, 2 laps in the Stop & Go and already my again in 1 cylinder operation (heat management) with 140 degrees oil temperature jump through the area. Does anyone have experience with the parade fans e.g. www.lenale.com or blow-cooled oil coolers ? (e.g. http://www.ultracoolfl.com) In the 21st century should somehow be able to bring the heat out of this engine. ciao enzo