There are two thoughts here. First being to add a little weight to the port side of the boat to level/even out the list to starboard that is resulting in a slightly asymmetrical convergence of the water from each side of the hull and under the boat. Second it looks like the wake plate is actually too far down which is resulting in the hump being pushed back so far from the transom. Adjust it up 1/8" to 1/4" and try again.