<font color="blue">When you get the shear pin replaced I would let the shield turn freely. As long as it spins freely on the shaft it will stop easily </font>
I agree! The spinning guards actually work pretty well - they are smooth and not driven with any force. So if you manage to get past the spinning implement itself, you can drag your loose clothes or long hair on it and not get caught. Then you just have to get back past the big pieces of sharp spinning metal again so you can get back on the tractor!