There's a couple different types of poly edges, I've been out of the game for a while now but I've been using a FallLine edge on a Gator for the last 10 years. It's worn maybe an inch off of the whole thing in that time, but is still pretty flexible.
It will chatter pretty bad when new, if you cut an angle off of the bottom it'll help break it in a little faster.
(broken link removed to https://www.fallline.com/snow-removal/polyurethane-snowplow-cutting-edges/)
It will chatter pretty bad when new, if you cut an angle off of the bottom it'll help break it in a little faster.
(broken link removed to https://www.fallline.com/snow-removal/polyurethane-snowplow-cutting-edges/)