The best replacement for backing is veering.

The best alternatives to backing are rated as following:
★★★★★  veering
★★★★  laying
★★  veering winds
★  fly line

Your alternative for backing is not listed? Suggest!
Speaking about backing, one probably shouldn't forget about adhesive.

Other search terms related to backing and their ratings are:
★★★★★ adhesive
★ braided line
You have in mind a companion for backing and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of backing in all years. Click on graph for more.
backing
veering
laying