"It's just another gimmick marketed to people looking for a magic cure to targets missed due to a lack of adequate practice."
I really don't know why this topic seems to have generated so much heat. The Shotkam is simply a tool that can be used to help answer the question" why did I miss that target". In many cases, the answer is known without the use of a tool like Shotkam. I can often tell why I missed right after the shot. However, in some cases eg. a systemic error, it helps to know an answer to the following question "Where was the gun pointing when the shot was fired". This is a question that a properly regulated Shotkam can answer. What you do with that is up to you. If you are missing the target, then you should know the answer to "where should the gun be pointing when the shot is fired". I have recently started shooting Trap again after a 30 year layoff. One of the ways I relearned the leads is to look at videos on Youtube. Many of these are Shotkam videos!
However, a Shotkam can provide additional information. For example, on doubles, it shows the location and trajectory of the second bird whether you hit or missed the first one. I personally found this helpful in situations where for one reason or another, I shot the first bird late.
As to 'adequate practice"...I have long heard the phrase "Practice does NOT make perfect. Perfect practice makes perfect!" ie. practicing the wrong thing does not help. Practicing the right thing does.
So I don't know why we need blanket statements like the above. I am prepared to use whatever tools are available to improve my shooting. I have just started using a borrowed Shotkam. So far I have some information that will help improve my shooting. Whether I can actually use that information to make the improvements is now up to me. For me, that involves being "in the moment" and not just walking up, loading and calling for the bird. I have to "go through the steps". Steps that I know about based on the information I have available, some of which comes from my use of a Shotkam to diagnose my misses, as well as my hits!
Peter.

I don't have one, but I do like their videos on YouTube. They are helpful for seeing the lead at different stations in real time vs all the perceived lead amounts that many note.

I've been shooting and reloading for a lot of years, with several long breaks in between. I just started up again, and the videos helped me get back into it again. I can understand some of the comments about the camera causing the shooter to start measuring the lead. I found myself doing some of that too.

Fun for hunting...

https://vimeo.com/495889773

Except it can't help answer that question at all. All it can show you is how the crosshairs on the camera were swinging and where they were positioned when the gun went off. That visual in no way tells you why you missed the target. The visual the camera shows you are the result of fundamentals that lead to hitting or missing the target. The camera cannot capture those fundamentals so when the camera records a miss it cannot tell you why.

The image can't tell you how strongly you were focusing on the target or whether or not you removed your cheek from the stock. It can't tell you if you were distracted by the pretty clouds in the sky. It can't tell you if your foot position was inappropriate for the break point and you just run out of swing as a result. It can't tell you any of the other multitude of reasons why someone misses a target.

I don't know what makes you think this is some kind of heated debate. I'm simply trying to get people to really think before wasting their money on another gimmick product.

If you want to waste money on a gimmick, then waste a lot less of it and purchase a case of Winchester Tracker shells. Their marketing claim is that you will "see why you have been missing". They can't really do that, but at least you are not spending as much money on a product that can only tell you what you already know; LOST.

DEG if you read the line that you quoted you will see that I said "help". The Shotkam WILL indeed show that I shot behind the claybird. Now the question is "why". I have tried to document my own, personal, (limited) experience with this tool.
In any case, I am tired of you and this thread.
Peter.