Ouch, can you see the damage from the outside? I think it's an easy repair but will require some grinding (ugh) The other option for the stringers is to rip them out and build new ones, then you know they'll last. I did that in my 170 rebuild. You only need fiberglass cloth, 1708, resin and a homemade mold.

Heres a few pics from my rebuild:
Stringers out, hull inside ground and new 1708 over entire hull


New stringers


Stringers scribed to hull and set in place




Held in place


27 gal fuel tank notched in with room for expansion


Tabbed in and later tacked in place


This is the tank I bought at Marine Surplus in Bradenton FL. They have a web page


This will get you in the middle of the stringer stuff
https://classicaquasport.com/smf/index.php?topic=10101.msg103523#msg103523

Bow damage.  See the streaks? It appears to be polyester resin that was just dumped in.  That was done in the stern as well but I ground it out already.  The bonding putty is Grey so I don't think I would confuse it with poly resin.  Pretty sure someone has done a bunch of sub par work to this boat.  See the paint. It is representative of the rest of the work.

Again, why rebuild the stringers from the inside instead of the outside? I really do not relish the idea of grinding inside the stringers. Also, is it standard to have one layer of biax tabbing the stringers down because that is all that is there.  As shown in the Pic the bonding putty unbonded leaving the one layer of biax floating in the air, tabbed to nothing.

My goal with this boat is to make the guts last for another 50 years so my kids can finish it however they want when they want. I can change my goal if this boat isn't worth $300 plus a sheet Coosa. Thy plywood lasted a long time. Your opinions are appreciated.  Thanks

Can you show us the damage at the bow and the starboard side plz?

You can see extensive repair to starboard bow. There is also repair about halfway back on starboard. I assume same collision which caused starboard stringer blowout?  Why would core be removed  from next to keel?  Input please I am at a loss.