GreyIII:
So you can dive Keystone during less than optimal currents.
What do you mean you become a bottom crawler then it's all over?
Some people can dive Keystone on less than optimal tides ... others shouldn't. Depends entirely on your diving skills.
The current here predominantly runs toward the jetty from the direction of the old pilings (on your left as you're looking out from the beach). When it hits the jetty, the current splits ... the shallowest portion will push you back toward the beach, the middle portion will tend to be fairly benign, and as you approach the deeper portion (from about 40 fsw and deeper) the current picks up ... sometimes dramatically. You can go from no current to drift diving in seconds. You need to stay aware of your surroundings and react quickly.
What Jeff means by "bottom crawler" is that if the current pulls you out a bit too far, you dump all your air, grab rocks, and pull yourself back along the bottom till you are back in the "neutral zone".
This isn't an optimal dive plan (far from it, to my concern) ... and the penalty for not responding quickly enough is a ride across an active ferry lane, landing on the opposite side at Fort Casey, and a loooong walk back.
And I've seen it happen ... more than once.
Better to plan your dive properly. Pick up a copy of Steve Fishnaller's book "Northwest Shore Dives" ... it contains valuable informtion about this and other popular dive sites ... including current corrections for properly calculating when slack current occurs at this dive site.
If you have reasonably strong diving skills, and are not too particular about taking chances, then go ahead and play roulette with the current. Otherwise, follow the advice in the book ... which will tell you to dive this site 1/2 hour before slack to 1/2 hour after slack, except on days when there is very little tidal exchange.
... Bob (Grateful Diver)