ISO Steersman/Tankerman position

I have had my steersman ticket 200ton with Western Rivers & Great Lakes for over 15 months. I also hold a Tankerman mmd as well. If there is any companies that would take me in directly as a steersman so I could receive my tour and get cut loose, please let me know. I live in Houston, Tx and have worked 30/15, 28/14, 20/10, and 14/7. I am just tired of the giant company I work for telling me a few more months, repeatedly.