Hi Dave,
Thank you for your feedback.
The device can be securely attached to any position on your helmet, with an adjustable distance to ensure stability during use. Please rest assured that it is designed to stay firmly in place. For guidance on proper attachment, you can refer to our tutorial video: 
https://www.youtube.com/watch?v=fGLo9lePDuc
Please feel free to contact us if you need any help.
Best Regards