Come on, Fran. You know as well as I that any good information can be helpful, but if someone comes to you and says they need work on their fundamentals, do you really think you could have much of an impact in an hour?
You betcha I can!
I personally spend at least an hour shooting a video and then reviewing it with the student. That doesn't leave much time to help them fix any flaws.
By the way you describe it, no, I guess it doesn't. I always carry my camera, however, I try to be as efficient with it as I can and only when necessary. Sometimes, I don't need it at all. What a shocker! Right?
When people post videos on here, we often offer advice based on what we see...but that still leaves the student on their own to work out their solutions.
Sometimes, just showing someone the way to figuring it out themselves is better than hours and hours of instruction.
An hour is better than nothing, but it probably isn't going to be enough time to have any serious impact on someone's game.
Steve