As most lights on horseshoe-shaped life belts spend 99.99% of their life upside down, why do manufacturers design the lens to screw OVER the body of the light - so rain water runs down inside? Surely better that the lens screwed INTO the body so that rain runs off? I think the rubber washer would keep the sea out for the few hours it may actualy be needed 'right way up'.

Are there any designed like this, or have I just been unlucky?