stuck under the dock
 

Being a small lake day-sailor, I had not had much experience docking prior to delivering my Bristol 27 from Chicago to Milwaukee. We stopped for one night at a marina and had trouble finding a safe way to keep the boat from being scrunched under the dock. Lake Michigan water has been a bit low, and the B27 has low freeboard. How do I tie off, but keep the deck from being smashed under the dock boards? (our solution that night was to tie another line to a perpendicular dock that kept the boat from going under the dock)

Kedge anchor, (med moor style), or tie lines to an opposing dock. Those are the only ways I know of. I have to do that with my boat during the winter do to extreme tidal range.

big big fenders and fender boards
or tie off to the other side if possibe, is this in a slip or on a face?