"Why not take this to trial? " cause it's hard to get someone who confessed a winning decision?  "They play golf with the judge and laugh about all the stuff they did that didn't land them in prison" maybe YOUR lawyer and judge friends.  mine just laugh... maybe because they are golfing..
polygraphs are not admitted in court for a reason. "yes you honor, my client is stone cold crazy, with no remorse..or even a concept or remorse..."  but hey, he barely moved that needle...