Yeah, I did eventually find it on YouTube and listen. It's certainly interesting if nothing else.
I can't re-listen at the moment, but my recollection is that the Jacks version is pretty much just the verses from Al's version (minus the new "polar bear" verse), and is missing the full chorus that repeats the title over and over. I think the Jacks version has the bit from Al's version where the falsetto part singing the title bridges the verses and choruses, and that one bit basically serves as really short choruses for the Jacks version.
Here's an epic YouTube version where the Jacks track is set to a guy clearly grappling with "fighting the sea":
https://www.youtube.com/watch?v=wEoc1kvdrJc