Instead of heading up the talus slope, there is a small trail just to the east of the large rock formation (known as The Hitcher) just off the road. Head up that trail and take the left hand trail when it splits. You'll have to climb up the last 20 yards of the talus slope. The first route (Billy Goat's Gruff - .11a) starts at the top of the talus slope and the routes continue to the left.
The climbing on the Watchtower is not the classic pocket pulling that you expect from American Fork Canyon. It's more technical in nature with edges, crimpers, sidepulls and a few jugs thrown in for good measure. Fun area with good climbing and little traffic. This is a great area for fall climbing in American Fork.