▁the ▁far ▁side ▁of ▁the ▁rail / box . ▁ ▁F ee ble ▁gr ind ▁In ▁this ▁move , ▁the ▁back ▁tr uck ▁gr inds ▁a ▁rail ▁while ▁the ▁front ▁tr uck ▁hang s ▁over ▁the ▁rail ' s ▁far ▁side . ▁Professional ▁sk ate bo ar er ▁Josh ▁Nelson ▁is ▁the ▁invent or ▁of ▁this ▁gr ind ▁back ▁in ▁ 1 9 8 6 ▁at ▁the ▁Del ▁Mar ▁sk ate ▁ran ch ▁in ▁Del ▁Mar , ▁California . ▁The ▁name ▁fee ble ▁gr ind ▁came ▁from ▁Josh ▁Nelson ' s ▁friend ▁and ▁fellow ▁sk ate board er ▁Se an ▁D onn elle y . ▁Se an ▁used ▁to ▁call ▁Josh ▁" the ▁fe eb " ▁which ▁was ▁short ▁for ▁fee ble , ▁because ▁Nelson ▁was ▁so ▁skin ny ▁and ▁often ▁had ▁broken ▁lim bs ▁and ▁inj uries ▁from ▁sk ate board ing . ▁Many ▁people ▁watched ▁Josh ▁create ▁this ▁unique ▁type ▁of ▁gr ind ▁on ▁the ▁par king ▁blocks ▁that ▁were ▁mounted ▁in ▁the ▁res er voir ▁at ▁the ▁Del ▁Mar ▁Sk ate ▁R anch . ▁▁▁▁ ▁Smith ▁gr ind ▁This ▁man eu ver ▁ent ails ▁the ▁back ▁tr uck ▁gr inding ▁an ▁edge ▁or ▁rail , ▁while ▁the ▁front ▁tr uck ▁hang s ▁over ▁the ▁near ▁side ▁of ▁the ▁object , ▁leaving ▁the ▁edge ▁of ▁the ▁deck ▁to ▁rub ▁the ▁lip / edge . ▁This ▁trick ▁was ▁named ▁after ▁its ▁invent or ▁Mike ▁Smith ▁( sk ate board er ). ▁It ▁is ▁considered ▁by ▁many ▁to ▁be ▁the ▁most ▁difficult ▁basic