At 8 to 16 knots if the tide is going your way and you have a boat that can motor at 4 knots can you control the boat or do you have to wait for slack?
Yes, you have control, but you might get pushed around a bit.
I've watched Skookumchuck Narrows running on a big spring tide, and while I wouldn't take my boat through there when it was running, I'd take someone else's boat, just to give it a try. We do Dodd, Deception and Malibu when it's running with us.
Skookumchuck is just amazing though