Re: repair bumper without replacing?
Repairable? Sure. Worth it? No.
As EZ points out, you can get less expensive covers. And you would still have to remove that one to repair and to partial repaint/re-clear coat it. So why not paint and clear a brand new one and just put it one? Throw that one away, or see if Keystone will give you a couple of bucks for it as a "rebuildable" core.