When I started fishing Kevlar lines I think they were stronger.You could get 30 lb line at a 10lb diam.Seems like that has gone away.Because the lines were hurting people and breaking tackle???
Just seems like the strength to diam. ratios have gone down.You definately want to change out the buisness end ,I like to swap them end for end too.This takes two spools but will increase the life.
Thats all I use for catch and release on the Sol Duc in the early spring,Ike tamer and is good for getting the fish in with a little oxy in its system.