A USBC Certs and Specs Story: Topography (2015 US Open)//www.youtube.com/watch?v=mu0Zzpslppoball motion topography Kegel Training Center//www.youtube.com/watch?v=Tn5yf_2kJGAthe slope on the lane 5 is .001 (flat) and the slope per board on lane 6 had slope per board of .004 to the right.