Re: tapered leader became a knotted leader...
I'm new to fly fishing but will mention why I think it seems the line will drop to the ground on the backcast. Your line speed is too slow. You don't want to muscle the rod but, you need to keep the line moving fast enough to keep it on a level plane. Let the rod do the work by allowing time for the line to straighten out and load it. Allowing the rod to load (bend) as the line straightens will generate the necessary line speed.