Hi, I'm back -- it was great!! to sleep in my own bed that's actually large enough for me :-D
The others have expressed the pros and cons very well, but I'll throw in my $.02
Any cover is more easily installed/ removed with 2 or more people (exception being automatic covers - but the moral support while hitting the switch to open/ close it never hurts :lol: ) Things are made easier if the cover is properly folded before trying to put it on - 'fan fold' (or 'sailor fold') the cover [to fan fold the cover, have it spread out and the 2 people folding it start from either the deep or shallow end of the cover, each person places a foot on the cover ~ 3' from the back edge and pull the cover so that the fold created is even with the back edge, put foot on the top of the fold you just created and repeat, until you have a ~3' cover. Now, starting at both ends, make ~3' folds towards the center, when you hit the middle, fold one side over the other and you should have a ~ 3' X 3' cover, ready for storage (to make life easier in the fall, put a piece of tape on it on which you write which end of the pool to start at and an arrow pointing to the opposite end

)] Folding the cover this way makes it much, much easier to get on in the fall - if you have a new cover, you can do a 'quick and sloppy' fan fold before putting it on the pool.
The water tubes can be more easily filled if you are using a garden hose by purchasing a "Y" connector (like you'd use to run 2 hoses off 1 spigot) with on/ off valves. At the end of a hose long enough to reach all the way around your pool and attach 2 one foot pieces of hose so that you can fill both sides of a double water tube at the same time. If it's cold and the caps don't want to close on the water tubes, you can gently heat them up with a hairdryer to make them easier to play with. (I've got a few more tips/ tricks if anyone's interested

)
The solid covers will collect rain and leaves. A leafnet will let you remove the leaves more easily and a small submersible pump can help keep the water to a minimum - or, if your backyard permits, you can simply siphon off the water.
AGAIN

-- I'm cut short on time! I have to go to the dentist (thank goodness wife is here to remind me of these things :!: ) I'll come back later and see if I left out anything major.
Hope that this is at least a little 'food 4 thought' :lol: