First off, I had my doubts just looking at the DVD box and reading it saying that it was about of bunch of teens gathering at a lake where they will find do or something. Any movie that has a premise like this has failed miserably, even as a slasher movie, except for the first Friday the 13th.
I wanted to get up and stop watching the movie at least 10 times, but I just kept thinking that it had to get a little better. It didn't. Usually, I think every movie has something that you can take from it. This has nothing.
Do yourself a favor, and find something constructive to do for 80 minutes. Like, give yourself papercuts, or eat dirt.