[trux]

In dynamics, both Tom Sietas and Stephan Mifsud kept the top ranks with many records using bi-fins (world and national ones, sometimes the NR better than the WR), untill recently when Dave smashed them. I also heard Tom did in training 250m with bi-fins, but after seeing the video of Dave's WR, I tend to believe that the combination of the technique and the efficiency of the fin may be indeed better than at bi-fins that otherwise offer better possibility of really relaxed motion. Especially if he gets a wing monofin with a bigger angle that will allow him to keep a more hydrodynamic position during the still phase.