Freezing Watery Death?

I have lived in bay area my whole life and spent nearly every summer of my childhood boogie boarding and swimming all day in the same 50-60 degree water. A group of 12 year old's can spend 6+ hours in this same water daily riding/battling waves and undercurrents but we are to expect that a determined, genius, fit, hardened guy like Morris either with or without a raft and life jacket cant survive a couple hours in the bay? Didn't the mythbuster guys use the same raft and current and make it to Marin in 90 minutes or something? Not sure if they made it or not but don't talk about the bay like its the deadliest catch. Any nice weekend you can go to the beach here and see kids spend the entire day in the water without wetsuits and they probably use just as much energy as 3 guys with a raft and current kicking their way to Angel Island or Marin. The muscles in your arms and legs don't just seize up but rather go numb and keep you going for a long time. I think the evidence suggests that prison officials were likely trying to protect the rock's reputation and their own by declaring the fugitives dead and the prison still unbeatable. By this time officials know the prison is costing too much yet know it's reputation and intimidation factor is worth the cost. Admitting this defeat combined along with the very high growing operational costs is not a good look. Although in warmer water people mainly drunk and obviously unprepared survive much crazier ocean experiences. A woman fell off a cruise ship and tread water for 22 hours. Another for 38 hours. One drunk guy randomly picked a direction and swam 5 miles to shore. Others swam many more miles. The "freezing, choppy, shark infested" storyline is way overblown.

Even the innocent Titanic victims that were totally unprepared, under dressed, under educated and obviously much less dedicated to a planned and calculated specific objective were reportedly surviving being fully submerged in ACTUAL freezing waters for around 30 minutes. SF bay is actually way closer in temperature to the Caribbean than it is to those Atlantic waters.

Recently a 62 year old man swam from Alcatraz to SF against the current in 40 minutes. Once he swam round trip in 56 minutes. He and his buddy have done this swim 1,000 times. Literally.

Thanks to reply poster for reminding me that Jack Lalanne swam it HANDCUFFED when he was 60 years old.