Well Recently I talked to a divebuddy using an old and very flexible Specialfins 'Dolphin' about the folding problem. I got the idea of glueing a broad sailbatten on the upperpart of the back of the fin, in the horizontal direction paralel to the lower edge.
Judging from the great exampleratory Mullins picture, i suggest the batten to fixed just a bit lower than the toes of the footpockeds. With some good sanding I think the added drag of a 3-5mm thick batten will neglegeble, but will keep the otherwise exilent fin bending in right direction even under the pressure of some serious power aplied in the demanding discipline of CW.
I'll hope to receive my hyperfins in a few weeks, just befor I'll go the Berlin pool competition. It's a medium blade, and hopefully they got the footpockedsize right this time arround.
I will test it doing sprints and if any folding appears I'll make the batten reinforcement, well perhabs first use my -cheap- old WaterWay MD1 Long Distance
I'm very much enjoying this thread! Thanks for your imput and insights people!
Love, Courage and Water,
Kars
