When I use to compete what I found really helped with carb loading was using Test Suspension. Be careful with it though, if you run it too long you will go from making your muscles extremley full to carrying bloat. I use to start Suspension 2 weeks out from the show and when I carb loaded I had much better results when I used suspension. I never fooled around with Diuretics so I have no idea how Suspension would play into that mix. If you are going to try it, I would probably experiment first and not try it for a show the first time incase you wind up bloating or have some other issue with it.