Sure, but the point is to have an idea after you've hit the ball whether you held the angle or not. Then you have the necessary feedback on how it felt and what the result was. When the downswing's a blur, as RevMonster put it, it's very hard to say what you did right after a good shot or what you did wrong to produce a bad shot.
Moe, and maybe Hogan, learned to swing without a coach and Nicklaus (and a whole lot of others) without video. Wgere'd they get feedback from, if not from their own bodies? That's what feel's all about, and what I lack in large quantities.
