A jury should "think long and hard" about whether a world champion kayaker is guilty of being involved in an alleged plan to import up to $200 million worth of cocaine into Australia, a court has heard.
Olympic silver medallist Nathan Baggaley, 45, and his younger brother Dru Baggaley are accused of attempting to import a commercial quantity of cocaine into Coolangatta on the Gold Coast between December 2017 and August 2018.
Nathan Baggaley was arrested in mid-2019 about a year after his 39-year-old brother and another man, Anthony Draper, went out to sea before attempting to return to the mainland with 650kg of cocaine.
"You would (have to) think long and hard, obviously as the police had to do before charging him ... to conclude that the prosecution produced anything sufficient to get anywhere near reasonable doubt," his barrister Anthony Kimmins told the Brisbane Supreme Court jury on Tuesday.
The prosecution alleges Nathan Baggaley had a "key role" in the importation, saying he bought a rigid-hulled inflatable boat (RHIB) for $100,000, got it ready and covered its registration number in heavy duty black tape before its voyage.
The Crown also argues Nathan Baggaley communicated or tried to communicate with his brother at sea and drove a boat trailer to Brunswick Heads expecting to meet the cocaine-laden RHIB.
Nathan Baggaley admits he bought the RHIB, equipping it with navigation equipment and a satellite phone, but said the brothers wanted to run whale-watching tours from Byron Bay because he was "up for a career change".
"I had no suspicions it was going to be used for anything like this," Nathan Baggaley told the court.
The trial heard Dru Baggaley and Draper went more than 300km out to sea on July 31, 2018, meeting up with a foreign vessel about 9.30am the next morning.
Draper, 56, said he was recruited by Dru Baggaley to be part of a plan to bring smoko - which he understood was marijuana - into Australia.
The court heard Draper testified as part of an undertaking made when he received a reduced sentence during earlier court proceedings.
But Dru Baggaley says it was Draper who asked him to buy a boat, funded by Draper, and get it ready to meet a ship from Indonesia that would bring tobacco to be sold in Australia.
In return he would be able to keep the RHIB for his whale-watching business.
Dru Baggaley said Draper ordered him onto the boat before the high-seas rendezvous, warning he would tell "dangerous people" where the Baggaley family lived.
Asked if he was saying he had been kidnapped, Dru Baggaley said: "I didn't want to be on that boat, that's for sure."
Black packages - later found to contain cocaine - were thrown off a foreign vessel about 11 hours after the men left Brunswick Heads.
They collected the bundles, but threw them off the RHIB when pursued by a navy boat on the return journey.
The two men were arrested by police before reaching the mainland.
Dru Baggaley's barrister Mark McCarthy referred to part of Draper's story as "just ridiculous".
He said Draper admitted writing letters to Dru Baggaley while in prison saying, "I'm sorry I tricked you" and that Dru Baggaley "thought it was tobacco".
The eight-day trial heard 587kg of cocaine was recovered by the navy, but bundles continued to be recovered on the coast months after the alleged smuggling attempt.
A juror was discharged on Tuesday amid concerns they were not complying with COVID-safe practices after Brisbane went into lockdown on Monday. They were replaced by a reserve juror.
The trial continues.