The BBC Scotland website reported that Justin Humphrey, from Essex, ran into trouble just two days into his trip, when he hit bad weather near the coastal town of Stonehaven in north-east Scotland. Humphrey said: "My global positioning system went down and it was pretty rough and misty. I had no option but to call out the lifeboat."
The fundraiser said he was now considering travelling by car from Inverness in the east to Fort William in the west rather than risking the seas around the far north of Scotland. "I don't want to die doing this," he said.
Actor Rupert Everett has questioned the motives of fellow celebs who do work for charity, such as U2 frontman Bono, and branded their attempts "self-congratulatory".
According to the contactmusic.com website, a Make Poverty History advertisement that featured a host of A-listers clicking their fingers was a particular bugbear of the actor.
"All charity is a photo opportunity in the end," Everett said. "It's shocking how slick and slutty we are."
Paper Round wonders what Everett would have made of singer Paul McCartney's latest charitable efforts. He has been praised by animal rights group Peta after announcing plans to boycott cancer charities that test on animals.
The ex-Beatle has supported cancer charities since his first wife, Linda, died of the disease in 1998. But he now plans to refuse funding to organisations that support vivisection, reported the FemaleFirst.co.uk website.
He said, "When Linda died, I said I would support cancer charities. Animal rights groups wrote to me, pointing out that many were heavily into vivisection - and it's true."