The Central Hockey League, I think. Open tryouts are a great shot for players who other wise wouldn't have a chance. Thats how I got a shot with the Flint Generals in the UHL a few years back.
Just go out and make yourself noticed, make sure that every shift you give everything you have. If the coaches and the scouts notice you all the better. If you have a bad shift, have an even better shift the next to make up for it, coaches notice these things.
Its not always the most talented players that make the team, its the players who give the most in training camps and practices. I imagine there will be tons of off ice training in camp, at least there used to be so be ready for that. This is a decent program I found on the net, it seems to cover all the bases that you should touch on.
http://www.gonanooks.com/artman/publish/training.pdf
If that link doesn't work just scroll down to the bottom of the page and click the pdf link
http://www.gonanooks.com/artman/publ...ckeytrain.html
Good luck with the training, if you run into any problems or have any questions feel free to PM me.
I'll keep searching for some programs that mige be good and post them here, again good luck and stay positive.