Yes definitely, some carry canoes and hang gliders, both much longer and heavier.
It's best to aim for something that's not much more than a centre tube and axle, or a tubular chassis at the most, but you may need to extend the tow bar to give enough length for the board. Definitely avoid excess rear overhang, not just for load balance reasons, but because weight well out the back behind the trailer wheels will waggle the bike from side to side, making it difficult to ride. Front overhang doesn't do that as much since there's not the leverage close to the wheel.
Scroll down to the discounted Doggy Ride trailer on
this page and imagine it without the cloth box, I think that might suit.
Discounters like Cycle King branches sometimes have cheap imported platform trailers in stock.
For more ideas, see my
trailers page.
P.S. Yes, the Carry Freedom is excellent, but much dearer, also on that page.
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