Another Rick
You could try it and see, but I do not think it will help. You need the Clicks to try and follow. The Clicks are definitely not random. Your suggestion of using imagination only is excellent, just not as effective as PSTEC Negative, but then you do not need any hardware, it can be done almost anywhere, any time. Use it as well as Negative!
Your suggestion did inspire me to write this for my website http://peter-bunyan.com/zap-those-negative-thoughts-and-beliefs/. Thank you.
Peter