There was a spate of 4/4 Sports back in the day with cracked windscreens which often happened overnight. The screen isn't well supported to take tension either from the hood or from passengers using the frame to lift their weight out of the cockpit. Having said that, there hasn't been many instances lately of cracked screens. It's very important though that passengers don't use the screen as a leverage point.
At least the tension from the hood isn't pulling horizontally backwards, it's more of a vertical pull around the hood pivots.
