Phil at Idigbest gave me the idea , that’s how to lay pipe , the v is always on grade from vertical to horizontal . It’s works great with a dig system . This is a old bucket I had laying around 48” , the 2” cutting edge I had from older project , the v is 1/2 and the v tip is 1” . Bolted on so I can take off , this v is designed for 18” but will work for bigger and smaller .