Read the HAB theory. About every 10,000 years the Earth tips on its axis (we are over due the next one) and the magnetic poles switch.

What do you mean "IF?" Take a good look at a globe and see if you can tell how things fit. The Earth still (wobbles) on it's axis. Also if you check it's not exactly even now.

Theory? Isn't it pretty much a fact? And I doubt it could've affected the planet a lot

I don't know. I would hope that gravity would be too great and the rotational speed of earth is too fast to dramatically change earth's axis.

Since the exposed land is only a small fraction of the Earth's total mass, I doubt if it had any affect.

If you read "Are We Worth Our Salt?" by Arthur Ryan you will find a interesting twist on Pangaea and the mechanical process that enables the flip outlined in the HAB Theory, Path of the Poles, and Cataclysisms of the Earth. It can be found by doing a google books search.

1) "Pangaea, Pangæa or Pangea (IPA: /pænˈdÊ’iːə/, from παν, pan, meaning entire, and Γαá¿–α, Gaea, meaning Earth in Ancient Greek) was the supercontinent that existed during the Paleozoic and Mesozoic eras about 250 million years ago, before the component continents were separated into their current configuration" "Fossil evidence for Pangaea includes the presence of similar and identical species on continents that are now great distances apart. For example, fossils of the therapsid Lystrosaurus have been found in Gandu, South Africa, India and Australia, alongside members of the Glossopteris flora, whose distribution would have ranged from the polar circle to the equator if the continents had been in their present position; similarly, the freshwater reptile Mesosaurus has only been found in localized regions of the coasts of Brazil and West Africa. Additional evidence for Pangaea is found in the geology of adjacent continents, including matching geological trends between the eastern coast of South America and the western coast of Africa. The polar ice cap of the Carboniferous Period covered the southern end of Pangaea. Glacial deposits, specifically till, of the same age and structure are found on many separate continents which would have been together in the continent of Pangaea." Source and further information: http://en.wikipedia.org/wiki/Pangea 2) "Precession is the change in the direction of the Earth's axis of rotation relative to the fixed stars, with a period of roughly 26,000 years. This gyroscopic motion is due to the tidal forces exerted by the sun and the moon on the solid Earth, associated with the fact that the Earth is not a perfect sphere but has an equatorial bulge. The sun and moon contribute roughly equally to this effect. In addition, the orbital ellipse itself precesses in space (anomalistic precession), primarily as a result of interactions with Jupiter and Saturn. " Source and further information: http://en.wikipedia.org/wiki/Earth_wobble 3) Say there were very high continents, up to 30 km high. This would have been 30/6,371 or 0.47% variation to the average Earth radius. This does not make a very big wobble. 4) " Although the existence of Pangaea has never been proven, a look at the map of today’s world provides strong evidence in support of the theory. The continents look as if they are pieces of a giant jigsaw puzzle that could fit together to make one giant super-continent. The bulge of Africa fits the shape of the coast of North America while Brazil fits along the coast of Africa beneath the bulge. By studying the motions of the Earth’s crust, scientists are able to learn more about the precise locations on the Earth so their movements can be studied. Scientists also use the data to look at the Earth’s axis of rotation which causes a movement or "wobble" at the north pole. The Earth is not perfectly round, and the material beneath the Earth’s surface and its atmosphere is not equally distributed around the imaginary line around which the Earth spins. This causes a small "wobble" in the Earth’s rotation, much like the motion of a child’s top. The spin rate varies by only a few thousandth’s of a second which changes the length of the Earth’s day." Source and further information: http://www.gsfc.nasa.gov/gsfc/service/gallery/fact_sheets/spacesci/lageos.htm

you'd think that the earth rotation would be way out of wack and with that big of mass on one side it could affect a planet for sure, if you don't beleive me test it with a spere oand some clay

I wouldn't think wobbling would result as the axis isn't fixed. It would be comparable to an irregularly shaped asteroid floating in space and it would spin around it's centre of mass. The bit that confuses me about the Pangea theory is what holds the water on the other side of the plant.