I can float on my back while kicking and scull the water or keep my hands on my hips and my face barely gets wet. However, when I try to backstroke my face submerges during the hand entry phrase and floats back up. This requires me to blow out my nose to avoid inhaling water. I've seen people at my local pool perform the backstroke and their face remains out of the water the whole time. Even when I try to backstroke at a slow pace my face submerges at some point. Is there a reason I can't backstroke without my face getting covered with water particularly during the hand entry phase?