What's the easiest way to disable all of your collision polygons at the beginning of a layout without having to go through and do each sprite separately? I'm using Spriter objects which have many component sprites.
Put everything into families and disable them.
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Families seems like your best option.
Edit - quickdraw fail!
For my money, the easiest way seems to be setting collisions to disabled by default for any objects you want to spawn collision-less. No events required.