I smoked two large flank steaks on Saturday, roughly 2.5-3lb each. Results were excellent. I have all of my notes at home and can post them later, but here's a rough run through.
Applied a wet rub liberally to steaks late Friday night.
Got charcoal (K) good and hot. Added center section and water pan. Pan filled with H2O @ ~50F. Put on top grate and lid, waited till temp read ~300F. Placed steaks into aluminum drip pans and set on top grate. Added 3 chunks oak and one chuck hickory. Closed bottom vents completely. Temperature settled in at about 210 at about 10 AM.
Smoked at 210-215 until internal temp reached 165, about 2.5 hours. Removed pans from grill. Placed steaks in aluminum foil, basting with the juices from the pans and wrapped each steak tightly. Placed the foil packs back on the WSM until internal temp hit 195. Removed the packets and let them sit, still wrapped, on cutting board for another hour. Carefully removed steaks from foil and then poured juices into a bowl. Sliced the steaks on an angle, slices about 1/4" thick. When I plated them, I drizzled a small amount of the pan juices over the meat. Served with a spicy BBQ sauce on the side.
All in all, it came out excellent. Very moist, not quite as "fall apart" as brisket but very tender and similar in taste. It was a hit with my wife and daughter, and I brought some to my parents yesterday afternoon and we all hand BBQ beef sandwiched, which were excellent.