I am recreational level player, about 3.5-4.0. what split step time should i have? many coaching materials say i should do split step at opponents contact of ball. when my opponent hit the ball, i should be in the air. the problem is that after he hits the ball, i land. since i jump and i don't have stable reference to judge the ball's incoming direction/projectory, i lost more time to run to the ball. if i do ss before opponent's contact, i would be bend my knees and weight on toes at my opponent's contact, it's good to judge the incoming ball. however i may get my leg stiff and hard to explode to run. any tips/insights on this?