If its a freshwater popper, I'd just use screw eyes for the hooks and tie. epoxy them in place if you'd like. A dremel with the appropriate wheel will make short work of cupping the mouth. I was just down in the Florida Keys, and they have a flea market where a couple of vendors sell all sorts of hardware odds and ends, and they had bins and bins of dremel attachments of all kinds, along with all those things you needed last week. Of course you could through wire it, but I think that's overkill (until a musky hits it)...