The rock still works, but it seemed zombies could climb up the front of it faster than pre-patch. Last week, I was shown a different rock by people that had never beaten expert before, and it is even easier than the corner rock. It's to the left of the house, and it is a low elevation rock in the water. Hardly any zombies came at all, and a smoker shows up behind a rock nearby, which is not really a problem. Both Tanks "got lost", so I don't know how annoying they are if they can just run up to the spot or not. The run to the dock is pretty long, and a Hunter shows up in the water just like with that other rock, but for everything else in the finale, this rock was even easier than the corner rock. By the gun is the most fun, but I've only done the 2nd half of the finale on the dock itself, would like to try the whole finale there sometime.