Thank you all. We are certainly planning to take Rob’s advice having visited him to talk through the options.
Matt, your point is well made but we are hoping to cruise for about a week at a time and felt the Mk 1 was a bit small as we plan to sleep on the seats (is that your habit?) rather than on the deckboards.
We are looking to design a two-hoop tent. Hoop 1 amidships fixed into the oarlocks and hoop 2 at the stern fastened to the boom crutch.