Hey Yay !!! Got any pics of yours? I'd mount the reel across the end of the oval, but not quite at the end. So the last 3 ft or so would double roll. I think going sideways will be too much trouble to fold in half and then roll up a twice as heavy PITA cover.
If you or
@cj133 go with a heater, you will race to put a cover on after getting the first energy bill.
Solar covers are amazing to their capability. They don't warm the pool. They stop the bulk of evaporation where 70% of your heat loss occurs. Most see a 5-7 degree increase from the loss they would have had. But. On a cool week, it's of no enjoyment that the pool is 67 when it would have been 60. However, when the air Temps dip for a day or two, the pool stays mostly its original temp. So it's worth it's weight in gold on those days. We also found that if we got a cold spell, nobody felt like swimming when it was 65 or less anyway. But the pool would warm up that much quicker when the nicer temps returned.
No two seasons were the same. Some years it made all the difference and some years it was a moot point. But it did always work to it's ability.