Hydrodynamic pyramid weights

Normal pyramids have great resistance to currents but also some downsides: 1) they get stuck in the sand and often we can't pull them out because of the flat base that creates too much resistance. 2) during recovery, the flat part drags on the bottom creating a force. 3) during casting, the lead's base creates resistance with the ground and works against the wind, limiting the distances we can achieve. With the hydrodynamic pyramid, all these issues have been solved thanks to the "mini counter-pyramid" placed instead of the flat base.