Meldrum,

The Jester Challenge has no rules. And although some skippers that have nominated would not welcome a large boat, speaking for myself your boat at 30ft plus bowsprit and bumkin would be more than welcome. Contact Ewen Southby-Tailyour using the JC website and I'm sure you will receive the same answer. There is also a Yahoo Group for Jester Challenge participants and their friends and I'm sure there you would receive the same answer. http://groups.yahoo.com/group/jesterchallenge/ You will need to ask to join this group to ask a question however. but that is not very hard and you will not get knocked back.
Our next race leaves on 31 May from Plymouth so you will need to move fast relatively.