I'm replacing some anchor lines and dock lines on my boat. The lines are 5/8" double braid nylon. It doesn't fuse well. I was thinking of old school whipping twine for them, but my local shop suggested some dip-it whip-it stuff that looks like what you'd dip the handles of your pliers into.

What do you all think? Old school twine or dip-it whip-it?