I loved this map. 7 Gates is way WAY too hard. This is medium hard and fun and "doable".
I am not sure if I did this the intended way, but here goes:
I left the companion cube on the button so the vertical, blocking light bridge stays off
||then I started one reflector cube yoyo-ing and hitting both sensors and the spinner alternately
stopped the yoyo by shooting the bottom left portal onto the wall - and the cube dropped onto solid ground and lit up left sensor and turned on the light bridge. Took many tried to get this to work.
carried the other unused reflactor cube across the bridge and across the water
shot the portal back under to resume the yoyo effect, and this time I waited until it was in the air on the far side and shot the other portal into the wall to stop the yoyo and land the cube on solid ground on the far side - which then lit the spinner and the other sensor
this removed the first two fizzlers and the vertical blocking light bridge let me carry the reflector cube over there and place it on the button.||
The rest was fairly straightforward.
I think the intended must be simpler than this method