You could be right there !

My dad admits he "jumps at the ball" and "tries to hit the ball too hard"

I keep trying to tell him to use his shots more. On par 5's he gets 2 shots so he can hit 3 150 yard shots, a 50 yard pitch, 2 putts and he's got a net birdie. Instead he tries to reach in 3 (like everybody else !) and tries to hit the ball too hard !