I have not viewed every possible taper jig on the web, but those that I have seen have a work stop, which seems to me limits the length of board that can be tapered. I used to think that I was handy ...

Rockler’s Taper & Straight Line Jig: The taper drill jig allows you to make tapered cuts quickly, easily, and accurately at your table saw. With the miter bar removed, this wood working jig also ...