Why aren't fins for a frog kicker canted 10 degrees?

[FishWatcher747]

If this has been discussed already my apologies. I searched for the word canted and found nothing on fins.

So I'm at the pool today doing laps frog kicking with a snorkel and I'm thinking I would have more power if the big toe side of the fin was raised 10 or 15 degrees higher than the lateral side of the foot. There would be a similar benefit for back finning. Now one can compensate for this bad design by working on flexibility of the ankles but why not maximize the design?

There should be a left fin and a right fin.

They wouldn't be a benefit to flutter kick, I see why a flat fin is correct for flutter kick.

I have dove with a bunch of instructors and DMs by now and a lot of them only do the frog kick. So why would they not have canted fins?

 

[tursiops]

If this has been discussed already my apologies. I searched for the word canted and found nothing on fins.

So I'm at the pool today doing laps frog kicking with a snorkel and I'm thinking I would have more power if the big toe side of the fin was raised 10 or 15 degrees higher than the lateral side of the foot. There would be a similar benefit for back finning. Now one can compensate for this bad design by working on flexibility of the ankles but why not maximize the design?

There should be a left fin and a right fin.

They wouldn't be a benefit to flutter kick, I see why a flat fin is correct for flutter kick.

I have dove with a bunch of instructors and DMs by now and a lot of them only do the frog kick. So why would they not have canted fins?

Would this not cause some of the thrust to be directed downward...toward the sand and silt you often trying to a avoid kicking up with a frog kick?

 

[johndiver999]

If this has been discussed already my apologies. I searched for the word canted and found nothing on fins.

So I'm at the pool today doing laps frog kicking with a snorkel and I'm thinking I would have more power if the big toe side of the fin was raised 10 or 15 degrees higher than the lateral side of the foot. There would be a similar benefit for back finning. Now one can compensate for this bad design by working on flexibility of the ankles but why not maximize the design?

There should be a left fin and a right fin.

They wouldn't be a benefit to flutter kick, I see why a flat fin is correct for flutter kick.

I have dove with a bunch of instructors and DMs by now and a lot of them only do the frog kick. So why would they not have canted fins?

The cheapest Chinese Flip flops (or canvas shoes) have a left and a right, yet scuba manufacturers sell fins for $300, with no left or right side and people claim they are comfortable! LOL. To make matters even more ridiculous.. just try to buy one fin from a manufacturer or dive shop.. Very few will sell a single fin - they don't want to break up "a pair".

There are very few fins that are left and right.

 

[Rusty Shackleford]

Would this not cause some of the thrust to be directed downward...toward the sand and silt you often trying to a avoid kicking up with a frog kick?

I think he means to help rotate them inward.

 

[mcohen1021]

So I'm at the pool today doing laps frog kicking with a snorkel and I'm thinking I would have more power if the big toe side of the fin was raised 10 or 15 degrees higher than the lateral side of the foot. They wouldn't be a benefit to flutter kick, I see why a flat fin is correct for flutter kick.

I have dove with a bunch of instructors and DMs by now and a lot of them only do the frog kick. So why would they not have canted fins?

Do you do all your diving and snorkeling in a pool?

To make matters even more ridiculous.. just try to buy one fin from a manufacturer or dive shop.. Very few will sell a single fin - they don't want to break up "a pair".

Would you have a place you can buy just one shoe? How about a glove? Or maybe one sock?

 

[Rusty Shackleford]

We humans are limited from doing a true frog kick by our bone structure. The fins could be modded to better mimic nature assuming it doesn’t over compromise the flutter kick.

 

[tursiops]

I think he means to help rotate them inward.

I don't understand, the geometry, I guess. Seems to me having the big-toe side higher than the outside would make the rotation more difficult, not less.

 

[Rusty Shackleford]

I don't understand, the geometry, I guess. Seems to me having the big-toe side higher than the outside would make the rotation more difficult, not less.

I would make the little toe side lower.

 

[Rusty Shackleford]

Plus, frog do indeed have a left and a right foot.

 

[-JD-]

I don't understand, the geometry, I guess. Seems to me having the big-toe side higher than the outside would make the rotation more difficult, not less.

I had much the same the same thought, but I'm thinking this is a matter of reference. I believe that the OP may be referencing the orientation when sitting/standing not in horizontal trim.