Tides flow strongly through South Inian pass with lots of swirling and violent back eddies. If winds are strong it would certainly be prudent to wait until slack water before transiting the passage.
We found that the tide turned about an hour and a half before the time on the Navionics tidal stream predictions and local fishermen say that the actual timing of the change is dependent on wind conditions and can be as much as 2 hours different from that given by tide tables and flow predictions.