Eagle ,around here the oil industry uses giant blocks of beaded foam for flotation , temporary buoys , and floats ... Like 6’X6’X6' ... all with a hole through the middle to attach a line ... we see them regularly in oilfield company lots ... usually pretty beat up by the time , but we know the foam at least comes that big ... they’re Not laminated, just one Big piece... Would be FUN to get a couple pieces of this , glue them together and start carving .... but it could get Messy !!!
From previous experience with salvaging foam , once you cut off the weathered surface , the inside foam is like brand new ...