Creationists often claim that the water requirments for the flood were low because the moutains, such as Everest formed after the flood. The fundemental problem with this is that compacting Everest into a 6,000 year timeframe requires plate movement of almost 5 feet a year. Plates move now at a rate of 1 inch a year. Therefore plate movement would need to be 60x faster then what it currently is.
Plates move on the heat on the mantle they reside on. Magma temperatures when exposed to air are often rated at a 1120 C temperature.
So corrolating a 1 inch to a 1120 c and then recalculating the necessary heat increase to 60 inches a year results in a temperature of 67,200 C or more relevant 120,992 F. The hottest place on Earth's surface gets up to around 140~160 F. At a temperature of 67,200 C, the crust would turn into a molten sea of rock with temperatures easily hot enough to kill any form of life.
Creationists try to get around with fallacious claims
What is problematic is many of these authors, such as Baumgarder have admitted their papers require miracles outside the realm of science
Baumgarder's theory still does not work without miracles, as Baumgardner himself admitted (Baumgardner 1990a, 1990b). The thermal diffusivity of the earth would have to increase ten thousandfold to get the subduction rates proposed, and something would have to cause the advance and retreat of the magma bubble (Matsumura 1997). Miracles would also have been necessary to cool the new ocean floor and to raise sedimentary mountains in months rather than in the millions of years it would ordinarily take. 
http://www.talkorigins.org/indexcc/CH/CH430.html
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Maybe God doesn't care how you say your prayers,
just as long as you say them- Jeffery Sinclair