Question on Reel & Solar Cover

[csevel]

Duplicate post..but need any response. UNACCEPTABLE ACTION--CARLD, MODERATOR.
I have an inexpensive Feherguard surface rider solar cover reel that I bought when my pool was new....it's never been out of the box. We purchased a heat pump last year and I would like to retain heat at night. My question is whether a 12mil solar cover will be too heavy for the reel. The instructions say the warranty will be void if I use more than an 8mil cover. I'd like to purchase the clear 12 mil cover but am afraid the weight might weigh the reel down too much... Anyone have any advice??