lots of people have thought of this and suggested it in other threads.
it does not work
when you enter the country you will see that they look throught your passport, but they are not looking at how many stamps you have, they are looking to see if you have any denied entry stamps, as this is something they would have to investigate further.
to check how many times you have entered the country they put your name and date of birth into the computer and this gives them all the information they want. so even if you have no stamps in your passport, even if you have dual nationality and alternate passports....they know.
they are not stupid