I am on my second 4080 (same boat, sandy took first one).
I have a camera for blindspot, always wanted it on first 4080, never got it, came on this boat, never use it.
Reason is it is hard to judge looking at a camera.
If you know you will fit, then just look down the stairs and use that side.
If you ever tried to dock by camera you will see, it is not easy, especially if it is reverse image.
Save your money and invest in a good dock hand and some fenders!!