The rear foot support fins are a fundamental accessory to improve the start in swimming. Here is some information on adjusting the starting block wings based on the athlete's height:

Myrtha Track Start:

Description: Myrtha Track Start is a starting block model designed by Myrtha Pools to help the swimmer's starting position and optimize his performance in the race.

Characteristics:

• The block platform provides a stable support for the “track-start” departure.
• The platform is adjustable and non-slip, measuring 74×52 cm.
• It allows the swimmer to choose between 5 adjustment positions of the rear footplate, depending on the height of the athlete.
• The block base is made of PVC with no exposed metal parts to prevent corrosion.
• Officially approved by FINA, it is used in international competitions and in the main swimming facilities worldwide.

Correct foot positioni:

The correct position to place your feet on the starting block with flap for the “track-start” involves:

• Place your back foot about halfway behind the wing, resting only the ball of your foot..

N.B. N.B. In the dive, the most powerful "force coupling" movement, in order to improve the start from the block, is that of the arms. The energy developed by the arms is not only proportional to the square of the speed of movement of the arms themselves, but also to the square of their length.

Raising of hands/arms.
This technique can be used in both the weight-back start and the weight-forward start. Instead of just moving forward, the arms and hands move upward with more bending at the elbow. Since the path that the hands and arms make in this way is greater, more speed will accumulate, therefore more momentum thanks to the coupling energy.

This tactic is not often seen in high-level competitions but more often among young swimmers. It works well with the weight backwards only. The swimmer grabs and pulls from the front of the block by quickly moving the arms, fully extended, at the sides while the head is raised. Once you reach your hips, your arms swing forward more slowly to end up in the streamline position.

Although this technique creates a lot of kinetic energy at the beginning, the fact that the movement has to stop at the sides reduces the energy to zero.

Butterfly recovery.
The most powerful of all techniques is this, for any type of start. The reason lies in the fact that there is a fast and CONTINUOUS movement of the arms from the start signal to the swimmer's entry into the water. The way to make the most of it is with a backward weight start.

The swimmer pulls from the front of the block and, with his back arched, raises his hands and arms above his head into the slide position, much like the butterfly arm recovery motion. This circular movement can be performed either with arms extended or slightly bent, keeping in mind that extended arms provide greater momentum to match that of the other movements.

The risk of this start is that the hands are thrown forward at such speed that you risk exaggerating and stretching them too much and ending up entering the water with your arms slightly crossed (a DISASTROUS complication!). This technique also requires excellent flexibility of the shoulder joint (backward extension).