Thanks everyone for the comments. ..
and I bet that's some good eats there
Nope, not really. Jacks are best released or saved for shark bait. Put up a heck of a fight though, lots of fun to catch. Cool story.
TxAg is correct. According to Shane, jack crevalle isn't, "...considered to be of any food value due to their dark, bloody meat. However, [they] always kept a few for the workers at Hotel Punta Colorada where [they] stayed. They would make a Mexican stew out of it known locally as machaca."