I am thinking of purchasing the pool discussed here and on the Intex website it suggested levelling with 2" of concrete. Do you think that's necessary? I am in Indiana, if that makes any difference in regards to the concrete, but I am assuming that I will need to take this pool down each winter, also suggested by the Intex website. Do you think it's worth it to take down and set up each year??? I'm not afraid of a hard work, I just wonder what the time investement is to do that. An afternoon = fine. A few weekends = not worth it. Your thoughts? Thanks in advance!