do a lot of ocean sailing with the wind on your back as much as possible. know your gear and where it slides, practice gybing and keeping it down wind.
i did last years loc after sailing for 3 years and found it easy. finished around the 55 min mark but stuffed a few gybes and couldnt find the finish markers

but was a hell of a great time. went wave sailing for a few hours afterwards too.
its a very safe event thats very well organised for a newbie and gives you a chance to compare how you go against the best.