He took over the club from fellow New Zealander Kevin Greene in November 1997 when it was felt that the head coach position should be a full-time post.
He stated "When I come over I am not going to be saying to the boys that this or that is the way we do things in New Zealand, I fully expect that I will learn from Glasgow's players and they will tell me what they do.
"[4] Robertson thought the Glasgow team in 1998 could have competed in the Super12 and won the European Cup.
[6] It was thought that Robertson struggled to cope with merging the Glasgow and Caledonia Reds players into one team.
Robertson moved to helping the Scotland Under 21 side with Roy Laidlaw but left at the end of the season.