I have posted my new core strength routine on my site - the links are here:
http://www.d3multisport.com/articles/core1.html
http://www.d3multisport.com/articles/core2.html
These are Parts I&II - III should be done next week. I put something together that I think is pretty tough and really works your whole core. Let me know if you have questions.
Mike
www.d3multisport.com