Oh, really?
Water pressure doesn't work like that. Considering that the ocean floor is fairly flat under thousands of feet of water, your theory doesn't hold up to modern scrutiny.
Watch an ocean in less than one year’s time erode 50 yards of beach front, then replace it before next summer.
And that sand is deposited somewhere else, and eventually forms sandstones of a structure that can be seen in the stratigraphic record. Which means that a different process other than the Flood put them there.
Erosion and sedimentary processes are mainly results of water. The global flood had lots of water! There is no other explaination for the sedimentary layers we observe in the geologic record.
Oh, poppycock. There are similar sedimentary layers forming around the world as we speak. Alluvial deposits in the Rockies. Deltaic deposits in the Mississippi Delta. Bar sandstones on barrier islands. Reef limestones in the tropics (try and reconcile Permian reef structures with the Flood). Oolitic limestones in the Bahamas. Deep water marine sediments all over ocean basins.
Don't say this at your local University, you might get a failing grade because you learned (believed) nothing the teacher has taught.
Nah, I'd get a failing grade for improper application of the scientific method - namely, forming a theory and then looking for evidence that only supports it, rather than looking at the evidence and forming the theory that best deals with the evidence.