Sure, it takes the fun out of it, but I don’t care. So instead of holding the button for an hour, I spent the same amount of time writing code to do it. It works as a bookmarklet:
Or just paste this into the console:
Don’t click on the screen! That will trigger the “mouse lifted up” event, causing your precious 3 hours of holding time to wither away.
You have to keep the tab open, as in, if you have it in a separate window, that tab must be selected. (And sometimes you have to have the window focused)
I couldn’t find a better place to put this without making a big deal about it, but yeah.