Just a little correction. In the second drawing (the one with the "c" shaped clamp) the angle piece should be turned 180deg from what I have drawn, it will work either way I just like the look better turned over.If you scroll down to the pictures you will see the part I'm talkng about and it has the angle turned to face the way I think looks best.
Hope someone gets use of this set-up, it is very ridged, and if you spit a piece of vac. tubing and put it on the part in the gutter and on the clamp, you get no paint damage.