I am now ready to install new wire in the new mast. The question I have is what supports the electric cable from the anchor and/or steaming light. 40 feet or so of cable has a little weight to it. Do I use some sort of clamp? The mast has cable channel under the slides Since I didn't see how the old mast wiring was supported, I'm thinking some sort of cable clamp screwed into the channel. Any ideas?