If your talking for crown on gravel lane you only need 1/2 inch drop for every ft width . Gives enough run off for water.
Thanks! I think I'll go for the 5° as a total 'tilt' and also have a spot at 2.5°. That way I can make a ditch of sorts if I want to.
Now to figure out if this will work under the tractor. The blade itself is 8" tall. The 'swing' mechanism is 2.5" tall for a total of 10.5". May have to shorten the blade to 6" to get it to fit under there and clear the tractors lift cylinder. That is something I need to look into today!