" I usually keep all but 1 of the lines left tied on the dock, "
Adell, I'm dead opposite all the time. I keep the lines on boat and when I tie off, I'll often bring the lines from the boat to the dock then BACK to the boat so I can throw them off while aboard as well.
Lines on the dock are good if that's where the line handlers will be.
If your dock has horn cleats (normal in the US but apparently unknown in Canada?) you can do very nicely by tossing a line around a cleat, or simply on the "other" side of a cleat, and snubbing it off to stop your motion. Then the rest is just a matter of setting and adjusting the other lines, since you're already attached by one.