Il. cornfed. You are correct you have not heard of them. that is the best reason I can think of not to use them.

You will hear very little of them on this site because manufacturers are not to promote their products here. I will not directly promote here , but will respond to issues . such as this thread.

If you check out the Archery Talk site, the pse Site, The Archery Site , Archery Dealer.com
or just click on Google or some other search enging.
There are nearly 7000 headings about TURBO NOCK on Google.

All I can say is that four years ago 12 archers were using them. Now there are thousands. there are millions of archers so there is a good chance you have not seen them.
Most of those who have tried them and were willing to make small adjustments to their set ups have been quite pleased.

I went to the Harrisburg sport show many years Ago when Fred Bear and Tom Jennings brought that first Whitetail compound to the show. My Dad was an archery dealer and we sold recurves. He took a look at the Awful ugly bow with wheels all over the place and said . (t that time most people had never seen a compound before. ) That will never replace the good old recurve! We were out of the recurve business in two years.

There are some archers beginning to use our product . Last year Cabelas only carried our hunter model. This year they are carrying the Hunter, HTAX and the T-4 and their first order was more than they ordered for the entire year last year.

I guess we are all different. some people are willing to try something new others are not
that is what makes the world go round.