My sun catcher tri-toon came with a very basic Jensen 2 speaker system (though the radio has four powered speaker outputs). There are currently 2 speakers in the L shaped bench adjacent to the captains helm. One faces the helm, the other faces the front. I want to add a speaker on each side under each front bench. It will be easy to run the wire for the front speaker on the starboard side, since the radio is there in the helm. However, I’m trying to figure out a good way to run a speaker wire for the speaker that will go under the bench on the port side. It is a wooden deck, but has an all aluminum platform underneath. I’d really like to avoid drilling through the aluminum if possible, but I do want the install to be clean. Below is a pic of the layout if it helps. Any suggestions are greatly appreciated!