He spent three weeks at Waikato Hospital and had to have numerous painful skin graft surgeries.
"We had been through so much before the business launched we just had to laugh at the situation - it was either laugh or cry," Kells said.
"That was pretty tough for us but I think what we went through gave us the strength to get through everything else."
The couple, desperate to get away from hospital, had baby Sophia, now 15 months old, at home.
The pair said despite the financial pressures of lockdown they were accepting of the journey and optimistic for the future.
Before the business closed word was starting to spread and the three boats were fully booked.
Doughboats - small circular boats topped with a cabana-style roof and a round table at the centre surrounded with a bench seat - had been getting rave reviews before the business had to close.
"People absolutely loved them, it's a very unique way to enjoy Lake Taupo and for people to connect," Kells said.
The boats were booked for birthdays, family outings and corporate team building days.
"People can take wine and cheese or order pizza that we can deliver to them at the jetty and then they just enjoy each other's company - the round table means everyone is involved and no one can escape."