Please find Double Solar Rollers still available on AMAZON. 
To complement larger pool shapes that require 3 rollers we special offer this extra single-roller that are in limited supply.  Can also be used with Above-Ground Round Pools that are under 20ft max without needing to split the cover (over 20ft pools must split the cover).  Limited to 1 purchase per customer.

David Hoff, without the hassle ..