You should really look at:
Rule 14, which tells you of a couple of ways you can mark your ball, including placing a club next to the ball.
Definition of Ball Marker, which talks about a number of different things with which you can mark the ball (including "an object made to be a ball marker")
The section in the Equipment Rules that @Missouri Swede quoted, which talks about when an object manufactured to be a ball marker becomes an alignment device.
The 2-inch limit applies only to objects intended to be a ball marker. The definition of "ball marker" allows you to use a "small piece of equipment". A tee may not be longer than 4 inches, so that's about the maximum size that would classify as a "small piece of equipment" in my interpretation.
My interpretation is that it's similar to cracking a whip. With pros, their hips start the transition/downswing with a rapid acceleration followed by a rapid deceleration. So the speed or "work" you're putting into the club is the results of the torso, arms, legs accelerating and decelerating. There is kind of a chain reaction from one body segment to the other, so you need the deceleration to provide the sequential transfer of energy.
Basically I "brake" or stabilize very well and will never be able to override it. I need more juice on the acceleration side. Honestly, I most likely should have started playing lefty, it's my faster side and I throw lefty.
This also makes sense for because I hit it the straightest when I feel like I'm swinging hard/fast. I get in trouble when I try to guide shots and then I can hit it all over the place.
Day 46 - My new priority piece is a “faster” pivot, getting my shoulders/hips to turn a bit more by A3. Also working on a “straight” right elbow in my takeaway. Incorporating these two changes into my Helicopter Drill, version 4 at this point?