Here's a link to an image of the current positions of registered merchant marine traffic in the GOM. Traffic has pretty well cleared out of the path between Cantarell & the TX/LA coasts. Don't have any data on what "normal" traffic looks like for this region, but this is a pretty cool tool.

For example, scroll down on the page an click on "Gaschem Juemme." You'll see that it's a liquid tanker and is moving north as quickly as it can from its prior position at 0000 GMT at the latitude of the TX/MX border to the latitude of Corpus Chirsti at 1800 GMT.

Jeff,
Thanks for posting that. I knew there was something I needed to get from you. (sorry...)
http://www.sailwx.info/shiptrack/shiplocations.phtml?lat=22.878025859441...