Your boards look cool, and the web site with the info is very usefull.
I just started building my first home made board and I found the shape of the BRAT board very inspiring, so I decided to make a very similar shape to my board, just that mine will be a little longer: 124CM X 38CM.
I hope you dont mind...
I use a plywood core with polyester glass lamination.
I hope it will not turn out to be too heavy.
Thanks you for the inspiration!!!