Help with Static Force Simulation

Hello!

Just for background, I am a relatively inexperienced in SolidWorks.

I am working on a trampoline type device which consists of a circular platform that will be held up by two criss-crossed cords. Because cords are difficult/impossible to model in SolidWorks, I wanted to run a static force simulation (such as a person standing on the platform) on the circular platform by itself. However, the main problem is that there are no fixed points/faces on the circular platform, as it will be free to move.

Do you have any ideas as to how to accurately simulate the situation I described and what I can fix?

Thank you so much!

SolidworksSimulation