The "West Coast Defense" started as a harmless aside, but it captured the imaginations of Seahawks fans. Ok, not normal fans, but for the blue in the blood types that are reading this blog, it was everything from the second coming to a punchline. Even the boldness of its name is exciting. For now, who cares what it really is, if it's anything at all. Let's discuss what it could be. Design the West Coast Defense. A couple rules are in play. Current personnel must be used. It functions out of a 4-3 and standard 4-3 variations (Ie 4-2, 3-3, 4-1 etc).