We have a pretty good discussion going on the Vintage Diving website on fin designs. I've posted a design I began experimenting with over 30 years ago, and which I believe is still superior to any of today's fin designs. You can view the discussion here:
http://vintagescuba.proboards2.com/index.cgi?board=general&action=display&thread=1133330933&page=1
I will post some of the photos of my design that I took in 1970 in Alexander Springs State Park, Florida, below.
SeaRat
http://vintagescuba.proboards2.com/index.cgi?board=general&action=display&thread=1133330933&page=1
I will post some of the photos of my design that I took in 1970 in Alexander Springs State Park, Florida, below.
SeaRat