I have an X60 or whatever Aquapulser unit that I got from Arvind way back after I found out some crooks filed for the patent with my circuit in it. ...
I've been corresponding with someone overseas for a while now that has something along those lines. I'll be posting something about it very soon and...
Peter Lindemann told me about Bergstressor's spark prolonger quite a while back and I built one but have very little experiments with it to mention....