Here we go. I used my foam template to get a pices of foam oversized and glassed. Of couse it was a bit of a job thinning out the piece first as all my remaining foam is thicker now. No pics needed of all that fun.
Pic 2 is more fitting and working out what to do around the trap door in the corner.
Pic 3 shows that I have just one side glassed so I can play with positioning internally. The idea is to get the side wall cavity as wide as it must be and not a milimeter more.