The result was that all eventually managed to get a lifejacket on, but none found it easy.
One participant, Reece Irving, said that while it was exhausting, it was achievable in these conditions.
"We were lucky that [yesterday's] pool was 25 degrees, the reality is the ocean or lake you would be exhausted, freezing and wearing heavy clothes and it would be nearly impossible to get one of these on."
Tony Pearce said he could not believe that the inflatable lifejackets did not float.
"Before we completed the exercise we threw a few inflatable lifejackets, that hadn't had their cord pulled, into the water and found that within 10 seconds they had sunk. While you would normally be wearing one of these, it was really interesting."
Adrian Heays said lifejackets looked completely different in the water and it was hard to know where to start.
"It was a really valuable exercise, because you quickly learn how tough it is to put one of these on while in the water and adjust the straps. It goes back to the important message to get it on or it's no good."
Submissions close Thursday at 5pm.