Is there a minimum size for an aluminium hull? Welded ally ribs fascinate me as I spent some time working as a TIG welder in stainless steel. I've been impressed with Ocean dynamics craft but havent seen anything around 6-6.5 metres in ally.
As you might imagine the idea of a self build kit for a RIB hull flat-packed in ally then sent to the buyer for assembly has occured to me. All the profiles could easily be made and cut. Then the buyer could have all the fun and satisafction of liquid metal alcamey(?)
No moulds, no curing and easily configurable for inboard engine mounting, couple this with a removable tube system and I might just have talked myself into an affordable boat-!