Aid Climbing Skills Seminar Aid Climbing is an important skill, whether you've been dreaming of Yosemite big walls or looking for that extra confidence to try a route that's pushing your limit. Aid climbing can get you through a pinch. You'll practice different aid techniques, both quick and simple, as well as the more complex moves . We'll look at different options for using etiers, daisy chains, and jumars both traditional and improvised.