He says it's never been easier for people to gain the skills to be involved in junior rugby.
At the workshops, course participants will learn the latest coaching techniques. They will also be able to get a copy of Leslie's new free 39-page Junior Coaching book.
Leslie says he's determined to put the fun back in coaching.
"All too often those coaching youngsters lack a good plan and the confidence to successfully deliver it. People can get stuck at practice, especially if they haven't got their planning right.
"These workshops are all about giving volunteer rugby coaches a plan so they'll never feel stuck or frustrated at rugby practice again. I've coached more than 20 rugby teams in my 13 years of volunteering at rugby coaching. I've boiled down my knowledge into three core principals and a two-step plan."
Leslie has worked on the new coaching programme with his close friend Tony Brown, a former Highlanders Super Rugby-winning coach who now coaches Japan's national rugby team.
"I've teamed up with Tony to get the professional angle and blend it in to work at a grass roots level," Leslie says.
"Each coach walks away with a solid understanding of how to run an hour-long coaching session. The downloadable coaching book means coaches have all the information in the palms of their hands, viewable on their phone or mobile device."
The programme is a way to help strengthen junior rugby teams from the ground up and enhance the quality of the experience for everyone who's involved, Leslie said.
Grant McLauchlan, CrestClean's managing director, says junior rugby suffers from a lack of trained coaches but no shortage of keen parents who want to give it a go.
"What they need is a training plan to bring out the best in their kids' teams. That's why Leslie Rugby and CrestClean have teamed up to develop an easy-to-follow programme of core skills," he says.
"It means that any coach can use it to successfully keep the kids under control and have fun while they get fit and rugby skilled."
Mount Maunganui Coaching Workshop
When: Tuesday, June 5, 6pm-7pm
Where: Mount Maunganui Sports Club, 51 Miro St, Mount Maunganui
Free entry