Jan,
You wrote: the claim that the ark was anchored. The story clearly indicates it did not land where it had first been made.
I don't think the story clearly indicates that the ark drifted far from its original location. The Genesis account only tells us that the ark came to rest in the hills of Ararat. However, as COJ's comments which I posted pointed out, there is evidence that the area Noah and his family called "Ararat" may have extended much further south than it does today and even much further south than it did at the time Genesis was written. That being the case, Noah's ark may have come to rest not far from its original location. It may have been anchored shortly after the flood waters reached their peak before it drifted very far away and, if it was, it would have then drifted very little further.
You wrote: You keep ignoring that water runs downhill. A 150 day flood requires an enclosed area.
As COJ's comments which I posted pointed out, Mesopotamia has often been described as a "trough" by geologists because it is "enclosed" by areas of higher elevation on its north, east and west sides. If part of central Mesopotamia suddenly lost elevation due to a meteor impact, which some scientists have recently said may have caused Noah's flood, and tidal waves from the Persian Gulf brought on by that same meteor impact or another one accompanying it drowned the land of Noah, as some now understand the epic of Gilgamesh to say, then that three sided "trough" may have temporarily turned into a four sided trough, that is until the land of Noah recovered its previous elevation, and while doing so drained its flood waters back into the Persian Gulf from which they mainly came. Remember, the Bible does not say that it was just the 40 days of rain that were responsible for the flood. It tells us that it was also and probably primarily caused by "waters of the great deep" which "burst forth." (Gen. 7:11) I say, "probably primarily caused" because that is the first cause of the flood that is listed in Genesis.
You wrote: Your "rebuttal" of the wooden boat argument with a reference to Columbus' three ships shows you never bothered to find out the actual size of those historical ships.
I am certainly aware that those ships were considerably smaller than Noah's ark. But since your argument was one against the seaworthiness of all wooden ships, I thought it was relevant to mention them. Especially since I believe they endured much more difficult conditions at sea than Noah's ark was subjected to. And besides, as I also pointed out, those wooden ships were designed by mere men. The Bible says God designed Noah's ark. I think God is capable of designing a wooden vessel of that size that could float in what were probably fairly calm waters for several months.