I normally drill two 1/8" holes, just off center of each other, then turn that into a slot. then drive a screw driver into the remainder of the plug and back out
it has been done. that is a huge expense and lots of work.
here is the thread from oops doing just the thing.
https://forums.iboats.com/threads/hull-extension-in-progress-with-pics.231766/
electronic spray cleaner is to wash away dirt from a TV tuner, not remove corrosion from battery cables
use sand paper or a wire brush chucked in the drill
the connections should be shiny and clean enough your mother in law will eat off them
once completed, then seal every connection with...
a late 80's bayliner with an L-drive
unless you were paid to take it, I would cut your losses now.
many parts for the motor are NLA
the hull will need to be restored.
transom eyelets are the strongest (rated to support 3X the boat's weight)
the ski hook (round eye with finger) is basically rated for about 400# of pull (the most you can generate by holding a ski rope
a wake board tower is basically rated for the same 400#.
now when a tube submarines, the...
I normally weld the outer sleeve to the inner section on the locks, then weld a nut to the top of the sleeve then use a wrench to remove
I have also driven in a few screws and used a vice grip
for the jet drive you have, you need to take it apart, blast it, zinc chromate prime it, epoxy prime it, then top-coat it
or take it apart, blast it, and then powdercoat it.