"We could have capitalised more. But as we play more we will capitalise more on scoring chances," Robertson said.
However he was impressed with the consistent 90 minutes effort from his troops.
"Earlier this season there were times when we played well in patches and then went off the boil ... today we were quite consistent."
The fact Rovers had to wait until the 38th minute for their first goal was a tribute to the tenacious defence from the Paul Temple-coached visitors. Centre back James Hoyle scored the goal after latching on to a deflection from a defender .
Six minutes into the second half Rovers midfielder Saul Halpin scored the first of his two goals with an individual effort which saw him opt for a narrow route past one defender before his shot beat Wellington keeper Keegan Smith. Halpin scored his second with a 65th minute penalty kick after he was sliced down after taking on and beating three defenders.
As Robertson said all of his players including substitutes Josh Stevenson and Vinny McKirdy deserve praise for their contributions to the spectacle. Hoyle and his brother Stephen up front were busy as was winger Tom Biss.
However Biss wouldn't have been happy with his finishing which was well short of its usual high standard. Rob Pearson was solid in the midfield where Ryan Tinsley impressed with his physicality.
A 69th minute wayward attempt at goal from Liberato Cacacae summed up the Wellingtonians atrocious finishing. However their scrambling defensive work was top notch and keeper Smith was easily their player-of-the-match.
Top marks for enthusiasm on defence for the previously sixth placed visitors went to Omrie Saolele, Sam Philip and Liam Moore.
Robertson and co are away to third placed Stop Out on Saturday. A better completion rate will be a must in this clash if they are to remain unbeaten. Robertson will have an injury-free squad to select from for the trip.