2006 Tiara 3600 Sovran Stereo Question.

[Final Pursuit]

I am trying valiantly to replace the Clarion stereo on this boat. Has anyone done this? Tiara used 2 white cables for the signal from the head unit to the amp. For my alpine unit I need to run 3 sets of rca cables to the amp. There in lies the problem. There is no easy way to snake cables from the head unit area to the area where the amp is located. (Aft  port storage compartment). Any help or ideas are appreciated.