Here's the picture of the worst damage. This was a bit hard to snap, since the waves were large and it required holding the camera out past the transom as far as I could reach.
The hole is about an 18-inch to 24-inch circle. The blue foam was a compartment that was foam-filled to do exactly what it was called on to do here-prevent collision damage from sinking the boat. The compartment on top is the propane storage compartment and is sealed off from the rest of the boat. Bottom line is that no water is getting in past these watertight compartments.