coming from a 20/20 in mod c, pre-prepared and adapting to the stimulus on the day. Its too risky not to have anything prepared, especially if you arent a strong creative writer. Few people are able to write a band 6 mod c on the spot. You need to get good at adapting 1 or 2 preprepared responses to stimulus questions - that means crafting an adaptable base concept for ur pre-prepared response. Make sure you address the stimulus thoroughly tho or you wont get into the top band!