Re: missing skeg
The motor housing has to be taken apart and the shaft un bolted.
Take off the prop. loosen the screws, remove brushes and armature, unbolt shaft. Remove "pod"
You'll need to have a new skeg TIG welded on.
I would replace the brushes and everything once I was in there too. You'll allready have it apart in a few pieces.
Or if it were me I'd run without a skeg, or find a way to fabricate one on with a hose clamp rather than trying to weld one on.
Bill
