I am a novice DIYer and recently purchased a Makita circular saw (7 1/4"). The manual says that I should always put my two hands over the saw and that it is not safe to hold the saw with one hand while holding a lumber or plywood with the other. But, when I check most of tutorials or videos on Youtube, I often find that the saw is held with one hand while the other hand is grabbing the object. Is holding a circular saw with one hand a unsafe practice? Or, is the manual just over-concerning?