I store mine on its side opposite the cable. My sport pool is symetrical, yet for some reason the dolphin cleans BEST with the handle adjacent to the cable and diagonal. I have no explanation for why this seems to be true but reversing away from the cable and diagonal, it spends 98% between the two returns and misses large areas on each end. The power supply is right at the middle of the pool.

I still reverse the handle occasionally, but generally after cleaning will lay "Dollie" on her side with the cable up. Then I unhook the cable from the power supply, stretch it out and untwist it then reattach it to the power supply. Stretching the cable out seems to eliminate the "memory".

Hope this helps, Tony