Hi,
I am aware of these three rope scripts:
Ultimate Rope Editor
QuickRopes
Mega Wires
From first impressions it seems that Ultimate is the most feature-rich, followed by quick, followed by Mega. However, there is not exactly much information and only quick has a video tutorial (the other ones have just trailers).
If anyone could share some experiences that would be really helpful 
The MegaWires system is really just for doing dynamic wires between objects it is not really aimed as a full rope system, it does depend on what is you need it to do. Also the rope and chain system included with MegaShapes is still in Beta and needs some work before we would declare it a complete system it was added by request from a user of MegaShapes who has developed it further for their own companies internal use. So if you are looking for a rope system that allows for the usual game features then probably look at the first two options first. Can you share a little more info on what you need the system to do? When we get the rope system out of Beta I will post here
Would megawires be a good solution to fishing rod line?
I can only speak for ultimate because thats all ive used,
I used ultimate for a claw machine game (using it’s built in extendable rope feature),
and i was really happy with it
i had to email them a couple times because im so bad at stuff and they helped me very quickly
having said that, i doubt you could go wrong with any of those 3. . .