You may be at one level of skiing.
I may be at another level of skiing.
crudmeister may be at yet another level.
Bode Miller is even at a higher level of skiing.
We're all the same distance from infinity.
Tongue/Heel contact. Pressing down on your toes is bad. Heel?!
For years I was trying to "stay forward" and was on my toes, thus being stuck out of balance. Tom's coaching helped me to find my balance. Allowed me to find my balance by telling me it was OK to even feel heel pressure.
So I say don't underestimate the value of coaching.
Dynamic skiing means balance points change depending upon where you are in the turn, right? Mudfoot is right about almost everyone skking too far back, particularly when it gets slippery. I also think most skiers haver never been in balance, either because of lack of knowledge or poor fitting boots (too little or too much heel lift, etc.). And let's not even get into canting.
My wife had problems with fore/aft balance years ago when she skied steeper slopes. I asked her to start her turns with her big toe, a suggestion a racing coach gave me in the 60's when I was a little kid. It worked. Immediately she started to turn with her shins pressuring the front of the boot. Another suggestion is putting on your skis in the house and placing a pillow beneath the ski tips. You should be able "feel" a balanced and unbalanced position by pressuring the pillow. And that is cheaper than a $400 lesson.