[2] He did not initially pursue rowing after school but after seeing the success which his younger brother Paul was having at the Melbourne University Boat Club, he again took up the sport and joined the MUBC.
[2] Guest was selected as an emergency in 1960 for the Victorian men's senior eight which contested the King's Cup at the Interstate Regatta but he did not race.
For the 1960 Rome Olympics a Victorian coxless four was selected as the 7th and last priority boat and wholly on the basis of self-funding.
Guest was picked in the two seat of that crew with the others coming from various Melbourne clubs - Peter Gillon, Brian Vear and Kim Jelbart (albeit that Jelbart and Gillon rowed at varsity level at the MUBC).
The lack of coaching support provided to the team by the Australian Olympic Federation proved to be an issue.