you're right about the hills, but i did enjoy the tricky nav across the Medway flood plain, and obvs World of Water food was always good. I thought as a perm it was quite clever - I'd start from Tonbridge with a bank chit, then Edenbridge and so on - all controls open 24 hours, so could be done at any time. On a 200 in Kent there'll always be hills but at least they were on fairly empty roads.