, ▁catch ▁a ▁leg , ▁or ▁fall . ▁If ▁the ▁r ider ▁a ims ▁too ▁far ▁toward ▁the ▁a pe x , ▁it ▁is ▁very ▁easy ▁for ▁the ▁horse ▁to ▁run ▁right ▁past , ▁especially ▁if ▁it ▁is ▁uns ure ▁as ▁to ▁whether ▁he ▁is ▁to ▁jump ▁the ▁obst acle . ▁Due ▁to ▁their ▁relative ▁difficulty , ▁the ▁corner ▁is ▁not ▁seen ▁at ▁the ▁lowest ▁levels . ▁The ▁corner ▁is ▁a ▁precision ▁f ence , ▁requiring ▁accurate ▁r iding ▁and ▁good ▁training , ▁with ▁the ▁horse ▁straight ▁and ▁between ▁the ▁r ider ' s ▁a ids . ▁Due ▁to ▁the ▁build ▁of ▁the ▁f ence , ▁an ▁un comm itted ▁horse ▁and ▁r ider ▁pair ▁may ▁have ▁a ▁run - out ▁at ▁this ▁type ▁of ▁obst acle . ▁It ▁is ▁best ▁that ▁the ▁r ider ▁use ▁their ▁a ids ▁to ▁" block " ▁the ▁horse ▁from ▁running ▁out ▁to ▁the ▁side , ▁with ▁a ▁strong ▁contact ▁to ▁prevent ▁the ▁shoulders ▁from ▁po pping , ▁and ▁a ▁supporting ▁leg . ▁ ▁D itch ▁ ▁These ▁f ences ▁are ▁dropped ▁areas ▁in ▁the ▁course ▁that ▁may ▁be ▁up ▁to ▁ 1 1 ▁feet ▁ 1 0 ▁inches ▁wide ▁in ▁advanced ▁competition , ▁although ▁they ▁are ▁seen ▁at ▁less er ▁width s ▁at ▁all ▁levels ▁of ▁competition . ▁ ▁They ▁can ▁be ▁used ▁individually , ▁or ▁in ▁combinations ▁such ▁as ▁the ▁coff in ▁and ▁tra ke hner ▁f ences . ▁ ▁D itch es ▁should ▁be ▁r idden ▁posit ively , ▁with ▁increased ▁st ride ▁length