Maximizing Tilt View Extents

This may sound counterintuitive, but tilting the camera to its extreme will not always give you the best view above or below the ROV. You will find that as the camera is tilted up or down, the view above or below increases as expected and then as the camera's lens gets closer to the housing, the upward or downward view actually gets cut off slightly. There is an optimal spot, when the lens is still in front of the plane of the housing that provides the maximu, view towards the rear. Once the lens gets closer to the end of its rotation, the view starts to get blocked by the housing. Here is a cheapo graphic.