I like the thinking. I'd really like to have T-foils on my Spitfire, but I sail in an estuary that has many moorings, as well as sandbanks. It is the mooring lines that worry me. Kick up rudders have done their job too often for me to go with 'fixed' ones. However, I still think kick-up rudders with T-foils will still leave me tangled. Is there any reason that the T-foils have to be at the bottom of the rudder?