Loops and Flat Cables

Dear respective engineers,

I am handling a little project to change a crane power cable which uses round cable to flat cable type.

and now i am wondering what is the best number of loop needed (20 mtrs rail) and the length of each loops. I do remember last time when i was still working with previous company, that DEMAG crane manual did mentioned about those subject.

Too long will increase the risk of the cable to get twisted and break the wire internally or stuck with another object. and too short will cause too many hook use.

Your idea and guidance is much appreciated