We run a 16r and on some of the risers that are close I will pull up to the riser, it is usually between the 3-4th row or 12-13th, raise the planter and pull forward, lower the planter and keep planting. We have removed the steel posts that were used when the terraces were built and replaced them with inch and a half pvc so if it is hit it won't tear up things. We have about 900 risers and even though I hate them I hate ditches even more. | 
24 row 30 inch planter question
