SRT8,
I keep my boat down at the OC, and usually put in around the end of April. The owners of the OC don't open until May, but have always been number one with those who use the docks. Not sure if you're aware of the power of ice, but it can actually take homes clear off their foundations. Have a peak of homes/cottages on the lakes during the 1970's and you'll have an idea of what I'm talking about. The docks at the OC are in fine form from May on, AFTER the owners go out and blast into the mud to reset the wooden poles that hold up the dock. As for the channel, I believe it's the cottages on the channel who manage it to my understanding and chip in to its cleaning, not just the OC (I could be wrong on this one...don't quote me). Have you filed through insurance on your fin? (Didnt look as those the motor itself was damaged, was it?)
"Do or do not; there is no 'try'".
-Yoda