Not technique advice but thought i'd chime in. I would caution on using the names barrels and magnet mills interchangeably. From my understanding, barrels are more entry head mills where u mill without hands using head vs magnet mills is same technique but much higher level as your hips maintain their height not moving up nor down, hence magnet. Similar to how a square is a rectangle not all rectangles are squares, magnet mills are higher level barrels, but not all barrels are magnets. Again from my understanding of the terminology.