A SDS under a small overhang on the north west side of the "Three Hour Tour" block.
From a sitting position, grab two crimps on a small crimp ledge. Drop knee, and toss out left to the lip of the roof. Claw your way past the slopers to gain the top out. It is short but fun.
It is located on the south side of Gilligan's Island. This line can be found by approaching the problem "Three Hour Tour." Once this westward block is located, walk around to the backside (the northwest corner) and you will see the small but devastating roof problem.