In response to my post about the 505's and their array of strings, Kiwi Neil Kennedy (who seems to have a vast archive of vintage magazine material about dinghy sailing) sent along a Yachting World article from May of 1972. It featured a recently launched Flying Dutchman, Hucklebuckfive, a craft that was billed as the "Worlds most complicated dinghy." Attached is a PDF of that article. Of note is the "blobcatcher" (pg. 2), which used a clock mechanism to adjust the jib halyard "one click at a time."