Re: exposed wiring
Yup split loom is the easiest. The other product I use quite a bi on my tinny is the wire track you can buy from home depot.
Its hard plastic track, with doublesided tape on the back. You run your wires in it than you can snap it closed. I use this in places where I have to run wire from my deck up to thr rub rail for things like my led task lighting, and my blacklights, places where wire loom could flop around or get snagged easily.
Bill