The Tibor caddie is best installed drilling through the metal flatbar support of the poling platform. Got to be careful if you only go through the fiberglass. If someone grabs it not thinking to help up onto the platform it could crack it.
I put mine through the glass in the port/stern corner. I'd probably put it in the starboard/stern corner if I did it over, but otherwise it has worked fine. I have to pull it and turn it underneath getting in the garage.