Oom Yung Doe schools offer training in 8 complete martial arts, including Aikido and Hapkido. The video below shows Aikido and Hapkido demonstrations, starting at 1:27.
In Hapkido, movements are hard and soft. Target areas are the joints, pressure points, and nerves. Close proximity to the opponent is most beneficial. Hands and feet are equally used in offensive and defensive movements. Strikes are in all directions, and are mostly angles rather than circles. Similarly, in Aikido, movements are hard and soft, and the target areas are the joints, pressure points, and nerves. However, hands are usually used more than feet. Offensive and defensive movements are applied in all different directions, angles and curves, and a very strong hand-grip is used.
We invite you to learn more about Oom Yung Doe training. Ultimately, though, the only way to see what you can gain is to try for yourself.