Who used them and are they worth the money to try??

Never used them in many years of crankbait fishing and probably never will. I figure if I'm fishing an area that doesn't allow the use of trebles, I'd rather fish other lures that are weedless or semi-weedless, such as spinnerbaits, Texas rigged or topwaters.

I bought a kit with them over 20 years ago, not only are they weedless,  they are fishless too.

I'd rather rip my treble hook lures free of the vegetation than spend the money to buy hooks that may possible lower the hook up ratio.  There is a reason why they are not all that popular. If they were any good, you'd probably see some of the guys on the FLW or Elite tours using them.  But I have yet to see any so....

are you fishing from shore or boat?  i used to lose lots of treble lures from shore.  if you use 15lb fluoro or 10lb+ braid you can usually bend out hooks and get ur lure back.  i rarely lose lures from my canoe/kayak.  paddle over and use a lure knocker.  saves a fortune. here's my homemade one: