Foot Strike Pattern
First thing for you to learn as an athlete is the right foot strike pattern. It is even more important in triple jump, because you rotate landing on your foot in each of the two steps before jumping on both feet. So keep strike pattern in great rhythm and balance.
In triple jump, execution of each step is crucial, and it has to be in well rhythm and composure. A little wobble or inconsistency in rhythm of each step will spoil the entire jump execution.
There are many methods used by athletes to improve or develop hopping. One way is that you can use push cart to push and hop on each foot. You can also develop hopping in sand. It is better to continuously gauge your performance and improvement and try to rectify mistakes.
It is also important how you start running and at what distance you start from. Generally you can start at 10 meter distance and land on the take-off foot, then land on the opposite foot in the second phase of the jump in the sand before landing on your both feet.
Stretch Distance of Take-Off Foot
You should walk with swing of both arms and stretching the take-off foot distance. Also, you can take single stretched jumps on the sand to stretch your take-off foot distance so that you are able to cover much distance on first landing.