For "six" years I wrote scripts, and ran a stable of 14 writers and edited their work.
However, during those six years I rarely worked less than 100 hours a week. So that puts it more like 12 to 15 years in terms of real experience.
I wrote a manual on scritpwriting. Never published it.
I wrote literally hundreds of scripts of which 125 were actually produced as films or videos covering the gamut of marketing, public relations, educational and training. I wrote no feature films, thought I probably will do that one day. I have a great idea already percolating.
In addition to the above, I wrote 77 television spots actually produced.
Due to circumstances beyond my control, I don't have a demo reel.