Wife has a 2000 z440es. I got 72 woody's gold digger studs (.875 I think) at hay days. I've never studded or neither of us have ridden with studs. I was going to only get 48 but I got a better deal with 72. My questions are how many should I put in and what pattern. The Cat manual says 48 only down the middle. Woody's recommends 72 spread across the whole track. She wants studs to help her on ice, no other reasons. She is NOT very aggresive at all. A very tamed trail rider only. If I do 48 I would use the extra 24 for spares, that would not bother me a bit. What do you think I should do?