Yeah.. those big loops can be a challenge. Just quickly pulling on the elevator all the way gives a quick short loop. Good for Fun Fly events (most loops). But the real loops, the large ones, require some coordination, with the main part of the loop is the starting point. It must be straight and level. So, it requires some good trim adjustments to get real straight lines with "hands-off" and at one speed. Then once entering the loop, it requires a close monitoring of the position of the plane to keep the wings level all the way around. Then, coordinated throttle cut at the top of the loop. When done right, it is a pretty maneuver.

But my favorite maneuver has to be the long-slow aileron roll. Now that's a pretty move. Difficult to do because it also requires some coordination of movement also beginning with a straight line. Then the aileron roll has to coordinate the nose position using the elevator to keep the nose straight and level. Definitely requires some hand-eye coordination.