The problem most people seem to have when hitting the heil is that their depth is wrong. It's easy to swim right under it and not even know it because of the way it is suspended. I almost did it myself on my AOW nav divescubadobadoo:
And...here's the only heading I can recall from memory. Go to the west entrance and surface swim to the blue ball bouys. Descend and it puts you directly on the trolley. Follow a 180 heading and you'll be at the unmarked car. This is a deep dive (90 feet).
