My husband and I are re-building a 26’ racing yacht. 

The below deck hull is almost complete;

• three bulkheads, 9 mm marine ply
• 9 layers of biaxial glass 420g/m² from the water line to the topside
• 8 layers of carbon twill 650gsm on keel floor
• 6 layers of carbon twill 650gsm through the center line up to the water line
• The strengtheners and longitudinales are foam core with six layers of 300gsm biaxial carbon and 10 layers of unidirectional carbon tape

All the carbon (with the exception of the unidirectional tape) is vacuum bagged.
Here is where we can use some advice:

We are preparing to build a plug to lay the deck.  We are anticipating using 4 layers of 300gsm carbon with a 10mm foam core.

Our initial idea is to build a wooden frame to act as a skeleton (see photo) and cover in polypropylene sheeting to act as a mold to lay the carbon foam sandwich.   Although we would love to use the resin infusion process, we don't have the experience on such a large area.  So feel we will have to vacuum bag.   My initial thought is to bag one layer of carbon with the foam to get a curve and then repeat the process to add the additional layers of carbon.  

If anyone has done something similar your advice is appreciated.