Hi SupD,
I personally stay away from the braid or Super lines for my Koke reels. The main reason is the zero stretch they have and the soft mouths of the fish, usally work against eachother. To answer your other question, I find it best to use mono backing to prevent spool slippage, and wind it nice and tight to help prevent the braid from cutting down and wedging into itself. Hope this helps, it's what works for me!