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The challenge in refoaming the floor on the 13 foot is the floor isn't flat. I like the plastic idea and was thinking i could wrap the floor pieces in plastic, use them with weights to shape the foam. Once the foam was shaped, I could reattach the floor using CSM.

As for cutting out the floor in the bow, it's a good idea to leave a section of floor for reference. Without foam, i can successfully line up the rear section using the sheer braces as reference. I was actually surprised how easy that was. The challenge is to keep the foam from distorting the deck shape.

I decided that while I had the floor out, i would add some additional mat to the back of the floor where I could. This will help to stiffen the floor and provide additional support.

I was surprised at the different foam densities that are present in the hull. The foam I removed from the gunal is clearly 2# foam that has been allowed to expand completely. It looks and feels just like the 2# foam braces i poured to hold the floor in place. All the foam in the floor is denser where it was restricted from complete expansion.