You're overthinking this, Adam. Which I totally understand, because I do the same shit. Took me ages to learn to drive a stick, for example.
Try to cut down on all the other movements. I think in your haste to understand HOW to apply this you're trying to combine the movements with everything else right off the bat. Just use the tile exercise in its most basic form. Don't lift your heels, don't pivot your feet. Just sit down over your back heel, keep both feet flat, and try to fold your hips as you slightly turn your upper body.
It took me a looong time of doing just that simple movement before my hips loosened up enough to add the other facets. But, like riding a bike, I can do the movement even after spells of inactivity now, even if it tires me right the fuck out to do so.
Keep it simple. When you see the angles for yourself (say, have someone stand in stance in front of you while you do your tile exercise) you'll start to see the applications. Once you get the hips moving correctly, you can't help but see the openings the movements create for you, like "Ah! There's the left hook to the liver, and there's the slip of the jab, and there's the right hand to the body." It'll come.
