I was much smarter back in my younger years. Thought I knew everything until one of my fishing buddies showed me a little trick for this situation. If you let the fly drift a little past where the fish rose, then pull back a little line with the rod tip and make a sharp little forward cast like you would in a roll cast, the whole fly line and fly will pop straight up out of the water with relatively little noise and you can execute a normal back cast with the line never touching the water. It's cute, try it next time you have a chance. You will not spook fish that may be lying close.

Bob