I take the different POV. I'm in North Central NJ and in the spring and late summer early fall the solar cover is VERY helpful. Having tried the opaque blue-on-top/black under, the transparent blue, and the transparent heavy-weight clear, I like the last best. I find it insulates when you are looking at days of rain, or cool nights. When you are not using it on sunny days, it really helps warm the water--very useful when you open the pool.
However, they collect a lot of junk in the spring, that you either have to wash off all the time, or falls in the pool--but it least you can skim it quickly.
For a small pool, like an 18' round, I see a reel as pointless--one person can remove or replace the cover, but it's far easier with two. On a larger pool, like my 40'x16', without the reel the cover would be impossible to manage.
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