"We're trying to get close to that 90-minute perfection but we're a way off," he said, emphasising his players were young.
Sandford saluted winger Nathaniel Hailemariam who was coming off a two-week layoff from concussion.
A dextrous Hailemariam was with world-class Auckland City during the ASB Premiership last summer but was unlucky not to play for them.
Sandford felt the prolific goal scorer, who also played for Wellington Phoenix Reserves, could be a valuable acquisition for Hawke's Bay United.
"I know he's been here before as a younger player but he keeps getting better all the time."
Sandford lauded Rovers as hosts, labelling the venue as "a real football club".
"I love playing here. You've got the supporters, the music, the match announcer [Malcolm Wilson] so it's good to see that and we enjoyed it."