Most of this very good route is only 5.5 or so. Just left of the Sharkstooth and the All Tuckered Out block, look for a pod with crystals leading up to an appealing narrow ridge. Alternatively, there is a bolted variation on the face just right of the pod that is easier and higher quality.
Climb through the pod at 5.8 or the face to the right at 5.7 to gain the ridge. The easy 5.5 ridge is one of the best pieces of climbing at Rushmore - fun, exposed, and very unique climbing. There are chains at the top now. A 70 meter line makes it to the ground, or a long 60 might but be careful.
My wife and I (Gary Geraths, Joyce Hesselgrave) put up this route in the summer oof '81. We had to borrow the bolting gear from various folks in the area ("second hand rose"). I liked the ridge too. Great view. Though my wife was trilled about being on the first acsent the romance with the area disappeared the next day when she was hit by a tour bus. I went along to put up a couple of route the next few days after with Paul Piana. Thanks for the site.
I think this is a great route. It is now well protected, with maybe 8-9 new SS bolts (Thanks Ron and the BHCC!). I used runners on each bolt and still got a little rope drag towards the top. I put some slings around the large horn on top to belay. There are also new rap anchors. A single 60M rope will get you to the ground.