Only enforcement of this I've ever personally experienced is being asked to remove stickers from them.Tournament rules state that modified goggles are banned
By definition cutting of fixed straps is modification
Whether this is actually enforced is another matter
Don't talk daft goggles are built with interchangable lens, so there is no basis in the arguement that changing lenses is modificationTechnically changing/replacing/adding/removing any part of the goggles is modifying. If you wanted to be an arse, you could argue that replacing a lens is modifying from the original goggle as it was intended to be used out of the box... etc
Now whose being daft Mr EricDon't talk daft goggles are built with interchangable lens, so there is no basis in the arguement that changing lenses is modification
Removing the lenses and not replacing it is though