To put a thimble into the end of a plastic line requires the proper splicing technique to make sure the loop does not slowly stretch out.

I have found that a Brummel Splice is the best non-slip. locking loop for a hollow braid rope. The following video demonstrates it on Dyneema, but it works equally well on hollow braid polypropylene. You do need a decent set of splicing fids.

https://www.youtube.com/watch?v=4WW7Qvg3VjI

https://www.coas****ersports.com/sel...l?currency=USD