I hadn't heard of tower hunts until this thread appeared. It doesn't seem appealing to me, basically because it lacks the element of chase (which is still a part of the true Spanish style driven hunt, or the Scottish style of grouse hunting). Some may argue that you still have to hit a flying target, but from other posts I gather that these are usually out of range.
Remember why trapshooting takes place over the "trap" house? Because those clay targets were live, feathered targets in the old days. In my opinion, this was a positive development. So, instead of releasing live birds from the tower, why wouldn't you just substitute a sporting clays course or install a clays thrower in the tower for your clients? Less cleanup and just as challenging in my view.
Overall, the concept is too artificial for my taste. Hunters must respect the animals they harvest, and this arrangement is devoid of this element. Instead of gamebirds to be respected, pursued, and enjoyed, they are reduced to targets. I guess that's why they call it a tower shoot instead of a tower hunt.