How deep is the hole behind the puncture? If there is something not to deep, there is a 2 part epoxy putty, like clay bars. Knead the 2 parts together and stuff it in as best you can . This will cure like a brick and allow the base of the ladder to have something to screw into. Also need to drill small holes at the end of each crack to prevent the cracks from "running" any further than they already are. Could also cut a block of wood slightly larger than hole and work it in behind the hole and epoxy it in place. Either way there needs to be some backing for the ladder to be properly screwed back.
