The problem is that the channel is narrow and the current pushes you around quite a bit. If you leave the channel at all, it's shallow enough that it's nearly dry during moon low tides.
It's been a couple years but it used to be "follow the magenta line, hug the green can as you round the north end of raccoon key, and then get back on the magenta line."
Good luck. It's not as scary as it's made out to be. Just pay attention.
Gabe and Em.
Previously of "In Sanity" fame. A 40' Mainship from 1981.