Springbok coach Allister Coetzee knows improvement is essential before the Tests against the All Blacks, Wallabies and Argentina that start in August. The Boks were resilient in winning 19-13 against Ireland on Saturday but the coach knows there are still problems. He admitted there were "areas we can improve".The Bok set pieces were solid and they defended stoutly but a lack of skill at times blunted their efforts.Coetzee pointed to skills in the air and in the contact."It was a better performance tactically but it was the execution of certain kicks that meant the ball didn't go where we wanted to kick," he said.Adriaan Strauss, who has been appointed captain for the rest of the season, agreed: "Technically and tactically we can be better."Coetzee won't look beyond his current group for improvement. But, with Super rugby resuming on Friday, the coach said if that they continued to play well he would reward form."For now, I'm pleased with what I have," he said.Basking in the afterglow of victory and a series triumph, Coetzee said he needed to get a few things off his chest."This is a team that has been together for three, four weeks. They were really put to the test. They showed resilience and character," he said of a team that lost the opening Test, came back from 19-3 down in the second, and lost a player - fullback Willie le Roux - to a yellow card in the third.Coetzee's decision to stick with Strauss as captain has prompted questions."The series against Ireland would have been difficult to negotiate for an experienced captain, let alone a rookie," said Coetzee."I'm proud of Adriaan and the leadership group around him. I want to call it 'the captain's group'. These are players like Warren Whiteley, Duane Vermeulen, Frans Malherbe, Beast Mtawarira and Pat Lambie."..