Funny you mention that because I actually measured where my foot dents were in relation to the tail in the hopes that someone might someday decipher this for me. The board was 5'8", I'm between 5'10" and 5'11". My front foot dents were about 34" from the bottom of the board, which is dead center.I wonder if you had a sizing issue with the board because I definitely drive it off my front foot. Maybe your front foot placement wasn't optimized with the sweet spot in the rocker?
How big was the board in relation to your height?
FWIW I've been on my Phantom a lot lately and I've found myself moving my rear foot forward a couple inches when I'm trying to make a section. Totally different than how I was approaching the Untitled. My Phantom is also 5'8".