6. Repeat steps 3-5 until you have dropped roughly 10 shields. Pick up all the shields so they don't disappear. You can drop the shields again because you have reset the drop timer.
7. Obtain another 10 shields using steps 2-4. Pick up all of your 20 shields at this time so they don't disappear. Once you have picked them up, drop them again since the item disappear timer has been reset.
8. Obtain 8 more shields, and then pick all your shields up.
9. Go upstairs to the Lumbridge bank. Deposit all the shields and withdraw them all as a note.