Came across this RIB while browsing and wondered if any other manufactureres had tried this?
http://www.excedoboats.com/index4.ph...IDSM=14&IDN=15
Argentinian company ( but unfortunately PVC!!! )
Cant see enclosed tubes giving the shock absorbing qualities of conventional tubes .Interesting though.
Several of this companies ribs on sale at ALIBABA.com poor photos though!!
cheers Dal