It's worth buying a small sheet of 1/2". It makes nice backing blocks,
and small items that you wouldn't want to paint or glass. For instance,
I made a small mount for my antenna for when it's folded down on the
pilot house roof. I'll probable use a piece to extend the helm a bit and
mount the radio. A little goes a long way. See if you can split a piece with
a friend.
Cuts nicely with a table or radial arm saw. Drills well.
I wouldn't make seat backs or anything like that with it. Plywood with
epoxy is just as good and much cheaper.
Mike