I got wobbly knees just walking across... not sure that I could do it on the deck of a narrow-boat (and definitely not on a trad stern). The chances of falling off are slim, but the consequences severe!
(and don’t get me started on the term “influencer” -- the “me, me, me” culture of everyone wanting to be a “you-bend” sensation, get their two minutes of fame, and become millionaires overnight without having to study or work. It is so demeaning to people of genuine influence; the scientists, the writers, the painters, the explorers, and even some of the politicians who have shaped this brave o’erhanging firmament! Spending a day pretending to live on a narrow-boat or turning up somewhere in a VW Camper and making a 2 minute video about “free” camping” before going home to your three-bed semi in Walsall is not influential…)
Also I have it on good authority that this particular "influencer" has got his paddle-board the wrong way round