I've never seen the springs but have always had trouble getting my Aeris Velocities on - probably because my boots "just" fit in there snugly, so when I have to put them on in the water - it takes a while. I can see these springs being the cat's meow for that problem - plus dynamic adjustment from what I'm seeing.
As far as splits being gimmicky - I kind of expected that. I've just never done any research. I've used my Velocity fins for a lot of snorkeling before getting certified and I've never had a problem with fatigue or keeping up with my DMs that always seem to have splits. I just want something that fits and works and is not overly buoyant. The jet style fins seem too thick and overly weighted for travel - so I'm probably going to stay away from them.
I have an unstable knee - two ligaments completely torn - not just stretched from a head on collision with a car in my youth on my Yamaha sport bike which also bought me double compound fractures just above the ankle and my leg is bowed from not being set correctly. I can also bend my knee sideways a great degree. It's fun to show people at the bar, but if I get caught off guard like I did this summer at Dutch Springs with 80lbs of cr@p on me walking down that steep ramp and it folded over on me and I'm still in a bit of pain from that. I just got a prescription custom DonJoy sport brace made for skiing and motocross but I doubt I can wear that over a 3mm - it's fit perfect for my leg as is. So a hard boot regardless of whether or not you need it for foot pain to me seems like the obvious way to go in the long run. If for anything else - because a hard and high cut is probably going to be more stable for me to walk in under any conditions with all that weight on me - not just the ironshore of Bonaire.
As far as splits being gimmicky - I kind of expected that. I've just never done any research. I've used my Velocity fins for a lot of snorkeling before getting certified and I've never had a problem with fatigue or keeping up with my DMs that always seem to have splits. I just want something that fits and works and is not overly buoyant. The jet style fins seem too thick and overly weighted for travel - so I'm probably going to stay away from them.
I have an unstable knee - two ligaments completely torn - not just stretched from a head on collision with a car in my youth on my Yamaha sport bike which also bought me double compound fractures just above the ankle and my leg is bowed from not being set correctly. I can also bend my knee sideways a great degree. It's fun to show people at the bar, but if I get caught off guard like I did this summer at Dutch Springs with 80lbs of cr@p on me walking down that steep ramp and it folded over on me and I'm still in a bit of pain from that. I just got a prescription custom DonJoy sport brace made for skiing and motocross but I doubt I can wear that over a 3mm - it's fit perfect for my leg as is. So a hard boot regardless of whether or not you need it for foot pain to me seems like the obvious way to go in the long run. If for anything else - because a hard and high cut is probably going to be more stable for me to walk in under any conditions with all that weight on me - not just the ironshore of Bonaire.