I have to make this clear to everyone.
IT IS NOT THE EXTENDER KITS THAT CAUSE THE HOOD TO GO FULL OPEN.
As others have posted the hood will do this without a kit installed.
The bottom line to the cause of this happening is the failure to ensure your hood is correctly latched.
Those of us who were around from the beginning learned how to adjust our latches because they were horrible. The new slings hoods close a lot better than the original setups.
2nd this!!! Most of us who have know this for years now... simply check the hood every time prior to a ride. I do it religiously as if it is part of my "check ride"