Today I have implemented an upgrade to my custom made booms in changing over to a new heat shrink tube that has an internal wall coating of heat activated waterproof adhesive.

There was nothing wrong with previous tubing used as the shrink ratio was tight enough for the tube to do it’s job and for it to remain in place. This upgrade of tube has only been just been made available in smaller quantities so it’s an upgrade worth making and material costs are only slightly higher so won’t affect the costs.