The reason I go with the incomplete forward pass is this. If he has the presence and control to propel the ball forward without it meeting a "bat" definition, then I call it a pass, if it isn't a pass or a bat, then it is a muff and a fumble, but in my mind in order to go forward far enough to gain yardage, he either batted or threw it, one costs yardage the other costs a down...and again in my opinion, I go with the incomplete pass...but yes it must be seen to be "believed" or judged