This document is directed toward a stabilizing system that is engageable with a watercraft lift assembly. The system includes a piling bracket, at least one piling bracket keyhole in the piling bracket, a lift-block having at least one keyhole pin extending from a first side of said lift-block toward said at least one piling bracket keyhole, and a stabilizing beam, for supporting a watercraft lift assembly cradle. The stabilizing beam is attached to a second side of said lift-block.