Our feed bunk was 7 1/2' inside so we could clean it out with a tractor. The pushing and reaching they were doing was causing neck bumps and increased sore feet in our cows. We decided we'd like to narrow it in to 6' give a wider alley on both sides new smooth raised surface and new ifarm green flexible feed rails. The concrete quote was 10 thousand to remove and rebuild an 87' feed bunk they can eat from both sides. The new green flexible feed rail was an extra 15 thousand and a Lely Juno robotic feed pusher was an extra 25 thousand. So we scraped that idea and a year ago raised and put our existing feed rail in more and built a wooden trough so they can always reach their feed and reduce lameness and eliminate neck bumps. A dairy supplier suggested we put rough rubber strips down each side 2' wife to the tune of 5 thousand. So instead we cleaned out a vacant barns rubber mats for $600 to do the trick and it goes most of the way up the plywood. Gives a nice smooth surface raises the floor a bit creates a smooth swooping trough and if a cow gets flipped inside by another bully cow she can get footing to get up after she flips herself over (seen it happen). It cut out spoilage from 2-4 skid steer buckets/day ($5000/yr) to 2 a week (that I fork out 30 min/wk job) and instead of costing potentially $50 000 it only cost us $1600 and gives just as good of results.