I'm not an expert chef and am anxiously awaiting the answers to this thread. I will say however, that when I've eaten LMB in the past my favorite size were 10-12 inchers. Mmmm, Mmmmmm!
Actually I'll tell you how I cook most fish when I want to do it quick. I buy a product called Chuck Wagon onion right mix. I soak the filets in milk, dip them in the mix and deep fat fry in canola oil.

I'm sure LMB would be very tasty this way.