Actually are you sure it's a dana 60? The super duties come with a Sterling 10.5" rear... I'd imagine your's would be the same.
you probably got pulled backwards because you were spinning - so no traction and the other 3 wheels might as well of been in neutral.
When you're pulling someone else, stomp the breaks and slowly let off of them and apply the go pedal.
If you want to stick with a limited slip - True Trac alllll the way.
Or selectable locker or a detroit locker. Do not go with a full spool, mini spool, or welded spiders (can't do that with the factory LSD anyway) but if this is a daily driver make sure it's something that can unlock around corners
