I somehow managed to get mine closed. I needed a new winter cover, so I purchased one on line from swim line. It said 3'over hang, 8yr warranty, blah blah...
Well it is junk! I have about 3" overhang, the cable it came with was about 2' too short! Luckily I still had the cable from my other cover. Then as I was running the cable through the grommets, about 85% off the grommets fell out! JUNK. I might saran wrap it for extra security?