Im lookin for some ideas on different ways I can mount my sub boxes to the false floors to make them easy to remove

Incase for some reason I have 2 take them out, (maybe spare tyre), i want a way I can mount them so they only take a minute to take out

Ive been trying to use some imagination here, but not too sure still. I was thinkin maybe a brack on back side and a screw half out of false floor with a strong piece of string around it to keep it steady, then when I take it out, pull string off screw and wolah, it rotates around sideways

any ideas?