Incredible idea for water tight hatch or other seal you need water tight.

I borrowed this from a video from Leo / Sampson Boat Co channel, this is such a great idea! Surgical tubing, or any good quality flexible tubing will work, I'm not even sure what surgical tubing means?

[@MrEricmgt]

That is Russell Brown of Port Townsend watercraft. He designed the PT 11 nesting dinghy sold by Chesapeake light craft, amongst other genius boat ideas and designs. Great tip on the hatch construction!

[@frankroosendahl8552]

Wat is the material , rubber or silicone ???