if you coudl check them out it would be great!!!
as for eth backing. He told me they are mainly plastic but there issome wood in them. Perhaps we coudl have him use the starboard instead. He seemed very willing to customize them. I asked if he could use extra thick padding and he said no problem.
As for checking them out. Go to his site and give him a call and see what he says. I havea bussy that lives in miami so if you can't check them out perhaps he will be able to.