"William R. Watt" wrote in message
...
you might be expected to use a taped fibreglass butt join. very common.
stonger than plywood. lay resin impregnated fibreglass over the join
and let cure. optionally turn over and tape other side of join. check
building instructions.

That is indeed exactly how Dudly Dix specifies it in his building
instructions.

Meindert