any tips for improving the lifespan of a fiberglass-over-Xps insulation foam boat?

before anyone gets mad at me, yes, i know XPS foam is not very good for boatbuilding. it was my dad

Making Stringers & Knees from XPS foam [part 2] - Dream Boat Build

Boat Keel Protector - Protect your boat keel from sand, rocks, oyster beds, concrete ramps, and everyday wear and tear on the water with The Original

Megaware - Self-Adhesive DIY Keel Guard for Fiberglass and Specific Aluminum Boats - Protects from Rocks and Oyster Beds - 9 Kit Sizes - 5 Inches Wide

closed cell spray foam insulation Archives - Hansen Buildings

How strong is the XPS foam with fiberglass??

XPS/Luan Sandwich for Deck

Fiberglass strips to use on male molds

JMSE, Free Full-Text

XPS/Luan Sandwich for Deck

Fiberglass Calculations

insulation Archives - Hansen Buildings

any tips for improving the lifespan of a fiberglass-over-Xps