Shawn,
Another great product that I use all the time is Bar top Epoxy this stuff is amazing and totally clear. Its a bit pricey but totally worth it. I have an outdoor bar with this stuff on it, been outside for a few years and it still looks great, no yellowing at all.
http://bartopepoxy.com/ I was able to buy a quart of it in a store called Rockler for aroud $40.