Again, what is wrong with this diagram:

The 6 feet would start at the black line.

It means the black line is equivalent to a 3 mile distance in terms of 8 inches per mile squared x the 3 mile.

The next distance from that black line is equivalent to the 4th mile.

You know this.

No, I know you are full of pure BS.

The black line is 6 ft high.

The purple line is looking out at that 6 ft high point, with the tube level at that 6 ft high point.

The orange line is looking from 3 miles further back.

Again, notice how even though it passes through that 6 ft high point, it isn't level at that point?

Notice how instead it is going at an upwards angle?

That other orange line labelled 11 ft is your drop for the 4th mile. But notice how that isn't from the view through the level tube?

Instead it is from a view through a tube pointing upwards.

Again, this shows you are blatantly lying.

Again, the shape is irrelevant except for figuring out how far the ground has dropped.

Other than it doesn't matter at all to the height of the object.

The ground has dropped by 8 inches, that means it will be 6 ft 8 inches below the eye line.

You will never magically get those 8 inches to magically increase to the 5 ft you need.

Again, if your position was actually supported by reason, you would be able to do more than just repeat the same pathetic lie again and again.

And as I have explained, even if we went with your blatant lie of 11 ft, IT STILL ISN'T ENOUGH!

You need more than 200 ft to hide it from view from the tube discussed earlier.

So you are just running of yet another tangent to hide from the fact that you are wrong, yet again.

And yet again you are trying to prop up your irrational hatred of the globe with blatant lies.