▁is ▁a ▁ 5 - 0 ▁and ▁while ▁doing ▁one , ▁you ▁drag ▁your ▁back ▁hand ▁on ▁the ▁rail / ledge . ▁ ▁T ractor ▁gr ind ▁ 5 - 0 ▁Hand ▁Drag ▁with ▁the ▁front ▁hand ▁ ▁N ose gr ind ▁hand ▁drag ▁This ▁trick ▁is ▁a ▁nose gr ind ▁while ▁you ▁drag ▁your ▁back ▁hand ▁on ▁the ▁rail / ledge . ▁ ▁L ay back ▁gr ind ▁This ▁is ▁a ▁classic ▁variation ▁of ▁the ▁basic ▁front side ▁or ▁back side ▁gr ind ▁where up on ▁the ▁sk ater ▁le ans ▁back ▁(" l ays ▁back ") ▁and ▁places ▁their ▁trailing ▁hand ▁on ▁or ▁near ▁the ▁lip ▁being ▁ground , ▁ost ens ibly ▁to ▁help ▁" push " ▁the ▁gr ind ▁further . ▁Original ▁B ones ▁Brigade ▁member ▁Jay ▁Smith ▁did ▁the ▁earliest ▁and ▁most ▁popular ▁front side ▁examples , ▁slash ing ▁out ▁viol ently ▁at ▁the ▁lip ▁with ▁his ▁board ▁while ▁placing ▁his ▁hand ▁well ▁down ▁the ▁transition , ▁in ▁a ▁very ▁" sur f - style " ▁pose . ▁By ▁ 1 9 7 9 ▁the ▁move ▁was ▁being ▁taken ▁up ▁on ▁top ▁of ▁the ▁lip ▁( both ▁tr uck ▁and ▁hand ) ▁by ▁Du ane ▁Peters , ▁the ▁distinction ▁being ▁noted ▁by ▁the ▁adjust ment ▁of ▁the ▁name ▁to ▁" lay back ▁roll - out ", ▁or , ▁occasionally , ▁" lay back ▁gr ind - to - tail ". ▁The ▁back side ▁version ▁was ▁introduced ▁by ▁Edd ie ▁" El ▁G ato " ▁El gu era ▁later ▁that