So an old guy on skis ran into me from behind last weekend. It took a nice chunk out of my tail, including the Power Ply veneer topsheet and exposed some of the core/fiberglass laminate and layup. I dried it out over a couple of days inside and then epoxy'd it and am letting it cure before I sand/file it down. I think it will be ok, it shouldn't delam.
Base is holding up fairly well, at least. No real deep shots, yet.