Rod tip guides are easy to repair but not a easy as other line guides only because the tip guide must be matched to the tip's diameter before super gluing.
To attach a line guide, I use super glue and a few zip ties to hold the guide in place being careful of course to line up the guide with the guides before and after. While the ties are in place, I use more super glue on the rod blank - top and bottom - and then wrap the guide using thin braided line as much as the ties will allow. After cutting off the ties I wrap the ends of the guide and brush on super glue over the entire wrap. I use the same method to repair a rod tip that's broken off.[/color
Others have other methods, but this one works for me. Hope it helps.]