To do this I just had to add a little extra code to the initCallback method I was already using to bind the external controls. Here is the JS needed to unobtrusively create a jCarousel with 4 external control links:
I simply append the .jcarousel-control div before the carousel container using carousel.container.before(). You could just as easily add it after the carousel by using carousel.container.after().
I love how easy jQuery make progressive enhancement! Enjoy.