A 20 year old fairway seeded with 50/50 L-93 and Providence creeping bentgrass where one half of fairway has a couple inches of sand from 12 years of sand topdressing vs the other half topdressed with just compost once every fall. Outside of that, both areas managed the same. We selected a dry period to conduct a ball bounce demonstration I think you will find interesting. Soil samples were taken where bounce study was conducted and sent to a lab for % organic matter in both 360 and 440 degrees lose on ignition. Stay tuned for results and further discussion on OM vs sand topdressing.