Griddle isnt to let the fat escape, its so that you can have a really hot pan with out burning the surface of the steak.
I would suggest,
Griddle, small amount of olive oil.
Add lots of heat. Sear both sides of the steak in one swift movement then cook on each side for as long as you want. If the pan is hot enough shouldnt take more than 5-6 min if you have a big piece of steak.
KaHn
/ah, irish steak. Not a huge fan too chewy for my liking, with the peppercorns you could add a couple while frying to add a peppery taste but may aswell just leave it