Need advice with Stringer Delamination

As you have been reading, it is an ugly issue and sometimes totals the boat.
I don't think you want a non-perfect or barely patched hull anyway.
Fixing bad stringers, frames, hull and coring may involve tearing all down and apart like it was in the factory.
Just to much labor $$$ and other boats are out there ready to go, today.

Get tight with a good surveyor. When you find something, set him loose on it.

Are you in PA or FL?

That actually sounds like there was NO delamination, in those stringers.
I mean, the most critical point for delamination is where the stringers are glassed to the hull, which is obviously along their bottom.
So, if water managed to fill them and remained trapped inside till you drilled a hole, the stringers/hull attachment was still holding well.

Sure, stringers shouldn't get filled with water anyhow, but I suspect that this was due to other reasons that have nothing to see with delamination.
Like water ingress point(s) due to something screwed to them, or whatever.

Pity that you lost contact with the boat.
I would have been curious to hear about the findings of whoever tried to fix the problem, and also what was done.

I'm guessing out loud; But the northern boats, used part of the year, Could be a good deal.
There was a cost reduced 50, I thought was the one you were looking at on YachtWorld up your way.

I would just avoid SeaRays. If you could not tell before, I'm not a fan.
There are better boats out there.