Narcodog, wax may bring it up to your satisfaction and even clean it in the process. Just a simple application of an aerosol furniture polish like Pledge can work wonders. If you try it and then decide that it's still too dull for your liking, just clean it extra thoroughly--as should be done anyhow--before using a refinishing product. The "old school" way is wiped on spar varnish. Choose the gloss level you like, such as satin, semi-glass, or high gloss. viewtopic.php?f=6&t=18487&p=109667&hilit=spiff#p109667
I'm sure others will give good recommendations about other products that would give good results.