I wanted to contribute my own solution regarding bleeding shins while deadlifting. I recently reviewed two threads here on this topic, so I know this is a topic of interest. Unless you have extra long arms or very short legs (or you staighten out your legs too early and lift more with your back), you can’t avoid the friction burn of metal rubbing up against the bone before you clear the knee. I combined two elements, my lined nylon track pants and the nylon encased foam pads with the velcro seal that wraps the bar for squats. A towel may work as well. Either one by itself hasn’t worked, but combined and no broken skin. I didn’t even get scraped. Can’t say how heavy you can go before even this method is no longer effective, but I thought it was still worth posting.