I have a 87 312 and the port side stringer and the "main cross support" (not sure what to call it) but where the stringer meets and it forms to the hull and houses the fuel tank etc. Batteries and switches. It is perpendicular to the hull and runs side to side.

Question:
Where this meets with the outer side hull the glass has seperated at one point and the stringer side lamination has also craked and pulled apart. The stringer is solid and it seems fresh. I spoke with the previous owner that I purchased it from last year, and it was not noticed. However I did not ever have the boat is and swells at all.

Mainly, what are some key things to look for when making the repair?
I have done many many glass and lamination repairs to boats, planes, etc.
I am just curious as to some possible things to look for or maybe something with this Old sexy ChrisCraft that I should look into when getting into this.

Thank you