elan
Contributor
Well, no... we didn't use fins
But, as a practitioner of the frog kick with and without fins, the technique is essentially the same. There is a slight difference in foot orientation between the two to get max thrust, but not really enough to spit at. The "modified frog" we use in scuba for very silty conditions is a different animal entirely and would be very inefficient as a breast stroke kick (just imagine the body position you'd have to take to keep your feet in the water swimming on the surface).
Rick
Well in a frog kick one does not spread the legs as one would do in a breaststroke. Plus the feet orientation is different.
The modified frog is not much different from a frog. You do not use the lowel legs with that amplitude but the feet essencially work the same. The power just comes from the ankle movements
Im feeling right away when I start shifting on the breaststroke - my knees start aching
May be we have different schools but that is how I was tought.