Hello - I'm new here and already learning so much. I am considering a Fitmax ipool and wondering if anyone here has one. I would love a real pool and have looked at Intex, etc. We have little room to work with, many trees, hilly land. Since I mainly want to do exercises - bad joints and knee surgery - I started looking at the ipool. I would love to get some feedback. The ones on Amazon are almost all good, but I'm so afraid of regretting this. Anybody?