Replying to Brake fully pulled out

I was using my backyard rail with my 'good’ skis one day when the brake suddenly just fell off. (Usually I’d be using another pair that has brakes removed). How do I fix this?? The screws got ripped out of the ski and probably a bit of dirt is jammed down there now, so if I just put screws back in they wouldn’t stay for more than a few seconds of skiing. I doubt I’ll ever want to remount these skis/ bindings so could I just use the same hole as before but fill it with epoxy or something to prevent it from falling out again. The bindings are attack 11s btw. Thanks