Learn to use, and recognize, the back eddys especially here in the islands. From my observations most sailboats just go straight into the main force of the current and come to a standstill or worse without ever thinking about where the counter current is, or at least might be. It can make the difference between getting through the channel or waiting for the current to change. Become proficient at anchoring, that's your last line of defense from going onto the rocks should the wind fail you. Buy more fenders.
SV Laurie Anne
1988 Brewer 40 Pilothouse