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forward roll-from standing place elbows in front of ropes and hold ropes about waist height, thumbs to front. Then roll body forward; you should end up sitting on bar. also there's a forward roll around the bar - from sitting you place elbows in front of ropes and hold bar, thumbs to rear. Slide bar down legs to hocks, and tucking really tight roll forwards. You need to twist your hands forwards just after you go.