As I find over and over again, foot work is the key to great timing and balance at the line. I was coached by Mo Pinel to long heal-toe the first 2 steps, take 2 quick short steps, then bend the knee, slide, and have knee continuation. I thought he was giving me something impossible to do because my knee sucks and because of that I didnt slide.
Little did I know, that as I got better at it, my shot making, spare shooting, accuracy, and overall bowling started getting better. I went from no slide, plant, grab the ball, and knee troubles, to slide, stroke, and no knee pain. What this process does it put everything into time so that the ball and slide get there at the same time.