Hi Skindiver,
I have the same aproach as you to dynamics, and depth diving, and it works well for me too. In a max dynamic I do the first lap fairly slow, relaxed flutter kick. Second lap I change to a dolphin kick and speed up, then after the 100m turn I almost sprint. I always thought it worked for the reasons you and Eric explained.
The lactic acid build up is pretty bad at the end though.
Depth diving is similar although I kick quite hard the first 20m going down to build up momentum, then ease off, and kick hard again going all the way up. I often switch to a dolphin kick half way up when my legs start wearing out.
I also like using really stiff Bi-fins. I have used a monofin a few times for dynamics but need more practise. I'm getting a monofin real soon so will start trying it out for depth diving also.
Cheers,
Wal
