Just got back from my first trip with the Seawing Novas - a long weekend (3 days - 13 dives) in Key Largo.
The fins are great. I can get a nice consistent kick, and could really move with a flutter or scissor kick. I'm still working on my frog kick form, but had no problem getting propulsion with these fins. I still can't seem to master the back kick (no matter what fins I'm using). I probably need someone who knows what they are doing to watch me.
My legs did not tire on any of the dives and most of them involved some level of current. Due to the width of the blades, I did feel I was hitting things a little going through the Spiegel Grove, but that probably just needs a bit of kick adjustment.
Only issue I have right now is boot fit. My 7mm wet boots fit in the pocket perfectly. My 3mm low boots were a little lose, I think I'll get something a bit heftier for warm water. My EVO3 boots for my White's dry suit are just a little too big, for that I think a pair of Chuck Taylor's should do it.