I used a Nauta flexible tank, not for fuel but as a holding tank on my old boat.
Properly installed and protected from chafe they work great. It can be tough securing them properly, and because they are flexible, it is impossible to stop the liquid contents from sloshing, so you need to be sure you don't make them so big, or put them in a such a place, that they can have an adverse effect on the stability of the boat.
Key West, Florida.
---In amelyachtowners@..., <jamescromie@...> wrote :
Has anyone used the collapsible auxiliary fuel containers that are available? They seem like a nice option for economizing in space when not needed.