Some tools to improve 1:
1. Use The Grid.
The obstacle may be unequal. What's the solution? Use The Grid. It is easier to make these things nowadays.
2. Athlete Remodification.
Athletes can't wiggle thier hands like the others, I suppose ssearching up a tutorial in youtube.
3.Motor.
The spinners needs to move automatically, not by force. How do we do it?
Click on the Axle, go to Axle and turn on Motor.
Reversed or not, but the motor torque to infinity by typing in "+inf" and choose a motor speed. The smaller the number, the slower they go.
The bigger the number, the faster it goes.
4. Gluing.
If you want the space to not move while usingg drag. then go to "Geometry actions" then glue to background.
More info if you need some.