Is SY Wildcard 1994 Radford 14's corroded alu hull fixable with just epoxy on outside?

 Is SY Wildcard 1994 Radford 14's
corroded alu hull fixable with just epoxy on outside?

So what alu alloy hull is made from I'm still trying 2 find out?

Because if it is not 5086...
then I think can repair hull with just epoxy from outside..,
provided all alu oxidation removed..
ie sandblast and etch right before epoxy?
 for good bond with epoxy

I understand only 5086 is not ok
 because delaminating/exfoliation occurs .. where sheets of alu sheds..
and/or causes holes in alu where corrosion can work its way from inside out..

Please Advice..

 

        

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Wildcards hull mapped... 

red ..    and numbered 1-82..  actual holes

blue ..  damage or old welded repairs, no holes

1-17.... ribs

 

 

 

 

 

 

 

 

 

 Corresponding map for inside location..

 

 

 

 

 

 

 

 

 

 

 

pics from both sides front to back with the numbered holes, ribs and un numbered bad spots or previous repairs..

port side front 2 back

 

 

 

SB side front 2 back..