Peter,
Thanks for the reference, that post should be on this thread as well.
Here is my post copied from another thread.
"Deception Pass,
This thread asked about going to Friday Harbor from Everett.
If folks are going thru Deception Pass here are the current predictions for Fri 5-16 (For Sat, or Sun see the link below)
Slack Max Speed Slack Max Speed Slack Max Speed
0811 1107 +6.0kts 1435 1711 -6.4kts 2032 2309 +5.2kts
Slack is the time when the current is still or reverses. Max is the time of maximum flow in knots and the + indicates flood current at maximum flow going toward the East. A - indicates the ebb current going toward the West.
These currents are fairly strong so the safest and smoothest time to transit during the day are at or near slack. That would be about 8:00am or 2:35pm.
The most difficult times would be 11:07am and 5:11pm.
Boaters experienced with Deception Pass go thru at almost any time, but beginners should go at slack for the first few times.
Here is a link to the NOAA current predictions;
http://www.co-ops.nos.noaa.gov/currents ... 2.html#120
These prediction tables can be printed to carry aboard."
Use the link and you can find the predictions for the places you want to go.