Mounting a track on the mast

Bob Mc

.
Apr 7, 2012
34
Catalina 28 Worton Creek, MD
Hi all, I was able to pick up a track and car to mount on my mast for a whisker pole for my 1993 Catalina 28. I went for the track so I could use it for a spinnaker when that day comes. I saw on the front of the mast there are pairs of rivets I hadn't noticed before about every three feet or so. I hesitate to drill into the mast if there is a conduit with wires behind there. Would anyone know the goings on inside the mast?

Bob