Use 50% power at the near end and 70% power at the far end. Do not use full power, otherwise, the arc will be difficult to control.
You can adjust it slowly to help change some details. For example, the magnitude of the force and the point of impact.
Test your offense, such as the strength, speed and curvature of the serve and return.
Research on techniques with low success rates because no one wants to catch the ball.
Do not pursue the number of laps, pay attention to simulating the real game, and control the landing point and curvature.
In short, equipment is always a tool to aid practice. If you want to improve your level, you still need the coach's guidance. This is because adjusting your movements requires a consistent rhythm and landing point, which are not provided by the return board.
I go into a lot more depth in the original article below. you can get more info from the article。
https://www.tabletennisday.com/blog/table-tennis-return-board.html