I did a trip on Memorial day and had the paper charts out and available, but used my handheld GPS for the dicey areas... as well as the Mark 1 eyeballs. Turned out the paper charts were wrong... but heck they are over 12 years old.
The buoys were moved and updated on the GPS (a new one I bought 2 years ago), but I never got around to updating the paper chart. (uh oh!)