Hello - Our pool water right now is a nice 70 degrees without a solar blanket. I think if I purchase one it should get it a little warmer for the upcoming months. My question is what is the best reel? I want to be able to have one person take it off. Also, I see so many different blankets-blue, clear, 3 or 5 year warranty....what should I be looking for? Or are they all basically the same? Also, do you cut around the stairs? Thanks for your help.