Hi Tony & dboddy.
A friend had another solution to cleating the furling sheet from the back seat, that I tried and found successful on his TI. Rob replaced the cleat with a swivelling cleat which had a slight upward angle. As he helms from his hakka with a tiller extension, this works well but makes it less easy to uncleat from the rear seat.
Safety wise, not a problem not being able to let more sail out, wanting to go faster and let more sail out, could be a frustrating.
The only issue I found with the stainless ring and cord was there was another dam rope to get caught in when vacating the cockpit in a hurry, like before going up on the beach. Maybe if I could get the cord over to the left would help.
Yes and I also tie the end of the furling line to the main sheet so it doesn't get lost. Again Rob's idea but rather than tie this to the life jacket, he has a jackline (runs from front to back) to which he attaches his harness. We used this on the St Vincent Gulf crossing and it allowed us to move about the TI, trampolene and Hakkas.