Using a reel - I am on the third year with mine. LOTS of on-and-off the pool (like evrery day during peak season), but the reel makes that an easy job - and extends the life of the cover IMHO.

Probably next year, I will need to get a new one, but three years isnt a bad run for what is essentally thick bubble wrap. MUCH cheaper than the investment in a heater and the monthly gas bill.

Just to give a bit of a sales-spin. I opened my pool last week here in SE PA and the water was 52 degrees. After cleaning, balancing etc, unrolled the solar cover. The water temp has gone up 12 degrees in just 4 days!

Based on what I am hearing here, I may go for the clear cover next time.