Chris, thanks, I am in Florida - I agree, I think along the coast would be problematic. I am looking at freshwater (only lots of algae). The float types might be a better option. Maybe similar to inflatable boats are puncture resistant, but they are not left in the water for growth. Thanks again
Thanks again - Assuming like most things, concept and theory sounds good, but getting all the details in the application of really getting an air barrier there - unlikely (guess like basements - they have sump pumps but usually damp if not wet.
I am interested in comments on building an inflatable dry dock (SeaPen like) solution for 25ft boat.
(overview of products: In-Water Dry Docking Systems Pilot Study Report (lacounty.gov) )
This appears straight forward with waterproof sheeting on the bottom, inflatable tube floats on the sides...