Originally posted by sturgeon
Hope this helps and I hope more people give Sebaks a try and contribute to this thread with their opinions.
Oh, ok. It's about time I chime in anyway
. I just wanted to make sure that I had used them enough to warrant a productive review.
I own stereo pro - hard blades (chemical resin stuff) with omer pockets. This is the same blade that scott has in med stiffness and likes for all-round shallow/mid depth spearin. For reference, I am a boy (hehe), 5'8" (173 cm), 150 lbs (68 kg). I would say that I have med/strong legs.
First time I tried em, I was happy, but not happy enough to justify the cash I laid down. But this had nothing to do with the quality of the fin, and everything to do with my technique. The fins were faster, and did produce more thrust than my sporasub dessaults :inlove. But they felt very foreign to me because my sporas are waaayyy softer than these.
Using my softer fins for deep diving, I would always give about 80% with the quadriceps and 40% with the hamstrings (my hamstrings are considerably stronger than my quads). If I put any more muscle into these fins, I would overpower them. Consequently, I developed a technique that proved miserably inefficient for my new sebak fins. When I realized this, and made the proper adjustment, I finally got to see what the fins are capable of.
In short, the 40% hamstring I was using was not going to get the job done. This did little more than drag the fin back to the starting position. But when I upped that to 80%, I felt that 'snap' that everyone raves about. I felt the water rushing over my head (I leave my hands at my side) with a force that I never felt with my sporas. However, this made me think that I had to put 100% of my quads into the kick to match the increased push of my hamstrings thrust. Mistake! My legs burned out too quickly doing this. So I modified my technique again, to take the burden off my quads. I allowed my knee to bend more, assuring that the fin would be in the proper placement for the back-kick, without tiring my quads out.
After I got the hang of this, I practiced modifying my old "super smooth" technique into one that speeds up the beginning and end of each kick. This is because it is the sudden change of direction that gives the fin its snap. If I put just a little more umph into the kick at this time, I would be rewarded with the energy the fin had accumulated during the 'dragging' portion of my kick. In other words, I had to make myself consciously "crack the whip". Since my sporas had no 'crack', I never learned to do this.
The final result was a kicking style that shifted the primary thrust from my quads to my hamstrings. So now my kick looks less like a flutter and more like an alternating dolphin kick (I'm finding the wording to be a challenge - is this making any sense
).
Drawbacks: Although the new fins do supply considerably more thrust than my old ones, they are not as comfortable to wear for a long time. This is simply because they are so much stiffer than my sporas.....no surprises there. Yet for a fin as stiff as they are (comparable to the Gara HF - maybe even a bit stiffer), they are fairly easy on the feet. Last time I was diving, I spent about 3 hours in the water before my poor feet started to hurt. To me, this is actually a function of the foot pockets, rather than the fin. Omer pockets have a stiffer, flatter profile across the bridge of the foot. Since my foot has a higher, rounded bridge, I find the sporas to be more comfortable.
Conclusions: I will continue to use my good-ole sporas for shallow diving and spearing; especially on whole-day outings. I will use my new Sebak fins for pb attempts, wreck diving, and deep spearing (I hope to get the chance some day). I also think that within a year, I will most likely put my sebak blades into Sporasub pockets.
Ted