I have helped several new owners with early used TheMightyHobie18 Magnums: Both had broken-through 9 inch long cracks under the front stbd and port rear crossbars. (none had ever had stainless steel reinforcing plates). If this bad, the clean-up and repairs must be done from inside, hulls inverted.
Big job, but doable.
Dacarls:
A-class USA 196, USA 21, H18, H16
"Nothing that's any good works by itself. You got to make the damn thing work"- Thomas Edison
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