I'd reccomend going with Superclamps. Sure they're a bit expensive (If you know someone you can get them for about $150 a piece)...but they're well worth it. I've spent more than enough time trying to thred screw-in tie downs into trailers after a long day of riding and I too can see how you get anoyed with it (snow, mud, ice build up in the holes etc.). Superclamps also allow you to just throw a pad lock on them and lock them to your deck/trailer....sure someone could probably jar the sled out from underneath it, but its going to be a huge pain in the azz. One vote for Superclamps.
