It's a nice fun climb with lots of good holds for feet and hands. There's no noticeable crux. Be careful belaying and tossing your rope down from the top; there's a giant pool of water which comes almost right up to the bottom of this wall. You may want to bring a tarp if you're concerned about your rope getting soggy.
Boardwalk follows the crack which is closest to the outer corner of G Wall (if you go around the corner, you are at H Wall). The crack goes up a couple of bulges out to the right a bit, and then you angle up left to get to the anchor.
Use a top rope. To get to the top, head past H Wall using the stone path. There's an obvious trail to the left, just go up it and head left to the peak. Once there, you find two trees and two giant, old, but sturdy, metal staples at the top which can be used to anchor (I used something like two 20-foot slings + one 10-foot sling to create two anchors). Make sure your rope is not running over the sharp edges of rock near the top!
Since there's a crack you might be able to place pro and lead it, but I didn't try that.