So if there are no swing meters and no triple click mechanic, how do you control your basic swing power, angle, etc?
Pull back the right stick, pause and thrust it forward, trying to stay as straight as possible. You get an indicator after the ball heads into the air about your power and how straight the shot is.
Using the analog stick for a shot is not new, of course, but without the indicators, there's a definite learning curve. You have to judge your shot based on feel and experience (it helps to see the avatar swinging, too, of course). Just like in real life (well, except for the avatar bit). I haven't found it anywhere near as punishing as in real life, though.
Honestly, that seems to be the design focus of the game. A lot of the design choices seem to be geared towards giving you a real life feel. Take the aiming I mentioned before. The fact that you can only adjust your aim in the standard shot view (as opposed to the target view) feels natural. I imagine some folks coming from previous golf games may find things like that limiting, but it's a bold choice and works for what they're trying to achieve.