are you talking about 3d printing with rubber or silicone? theres only one part i might need like that but i still have to dig in and fiddle with it more. when i get a chance to get back out and mess with it ill snap pics. it will be way easier to to explain it with pics
How many of us ride under water is a good question.
Is there a snorkel tube running up to the front or is the lid the snorkel itself?
The lid is the snorkel, using gravity to work for you. The opening faces down. Then has to travel up and over into the lid