I realised that it was Weymouth 04 that actually saw one of the first canting Hydrofoil Moth rudders. Graham Vials' boat from Full Force was finished just in time for the event and was done with no rudder flap, and huge foils! While it all worked okay in the lighter stuff, Graham had a few control issues in the breeze and needed a way of changing his rudder angle on the water easily.
Overnight a slot was cut in the tiller so the rudder pin had a range of movement, and a purchase system was rigged up along the tiller. Although you couldn't adjust it by twisting the tiller. you could pull a rope to change it. All quite crude, but an interesting blast from the past that is quite interesting given the current crop of canting rudders out there.