It'll actually do you good playing the hard way. I've actually had more wins than losses after practicing against 5-7 comps on melee. If you want to keep from hackers, either learn to disconnect your line, or use the 42 second rule. If their lag goes down to exactly 42 seconds before they resume, the indicated player is hacking. Get out of the game.
That's all I can really tell you. With that being said, I think you'll do better than me.