Also, those sinking ship observations have been studied and debunked
And your source for that is...your own Wiki page. Come on, dude!
The effect is not consistent and and tends to change constantly.
This is incorrect by the way you define "inconsistent" on that Wiki page. You say:
It has been found that the Sinking Ship effect is inconsistent. At times it occurs and at other times it does not occur.
My emphasis. That part is simply not true. It is true that the level of refraction varies with atmospheric conditions and that does vary the distance to the apparent horizon, but the claim that at times the sinking ship effect does not occur is not true. There is no observation of a ship going away from the observer and never sinking below the horizon.
Bobby Shafto, who came to our forum as a Round Earther (and presumably still is), was interested in this in apparent honesty (more than most people who have come here) and has looked at the material and concluded that the sinking ship effect is not consistently reproducible, and he has also concluded that the sinking doesn't even match the RE curvature.
In the video he's saying the camera height is 45ft and the platform is just under 17 miles away.
A simple earth curve calculator which does not take refraction into account says the target hidden height should be 51ft.
This is some documentation of that oil-rig:
https://www.boem.gov/sites/default/files/about-boem/BOEM-Regions/Pacific-Region/DPPs/DPP_1_1971-08-Proposed-Installation.pdfFrom page 20:
The production deck will be located 37 feet above mean low low water and the drilling deck located 61 feet above the same reference. The drilling .deck will be 80 by 125 feet. The top of the drilling derrick will be at an elevation of 223 feet above the water level
So you should always be able to see the drilling deck and above. Without refraction you wouldn't be able to see the production deck. In some of those photos it appears you can, but as we've noted refraction exists and is variable depending on atmospheric conditions. In some of those photos the legs of the rig are completely hidden. What are they hidden by?
You claim in the Bishop experiment that:
With a good telescope, laying down on the stomach at the edge of the shore near Lovers Point 20 inches above the sea level it is possible to see people at the waters edge on the adjacent beach 23 miles away near the lighthouse. The entire beach is visible down to the water splashing upon the shore.
You're claiming that from a much lower viewer height and a further target distance. And you go on to claim that:
Provided that there is no fog and the day is clear and calm, the same result comes up over and over throughout the year."
Why weren't you getting the inconsistencies which you now claim occur?
None of these depict the earth as one might expect if it is a globe with radius of 3959 miles without the optical effects of an atmosphere under varying conditions."
They certainly don't depict a flat earth. In all of the photos some of the rig is hidden. If your Bishop experiment result is accurate you should be able to see all the rig from a viewer height of 20 inches. Can you?