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.
Families seems like your best option.
Edit - quickdraw fail!
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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.