tsimms I am a recruiter for one of Transocean's competitors and hire roustabouts and ET's often. Honestly, they wont care much about your resume, so long as you have the experience. If your resume is the slightest bit professional , that will put you ahead of the pack of all the other roustabout candidates applying. The hardest part about getting these roustabout jobs is the sheer number of candidates applying for them, it seems like every single person living in the southeast states is trying to go offshore.
Your best bet is looking up their recruiters on linkedin, and sending them your resume directly. Best of luck!