I prefer kettlebell swings to deadlifts, mainly because I just can't get the form down on a DL. For whatever reason I end up doing squats when trying to DL *shrug
try doing a stiff-legged deadlift. keep your back straight as possible though. dont push it, use as light enough weight to make it good form but heavy enough for efficient resistance.
Reading this makes me feel 25%
haha that is what i strive for . but i want you to be 35%