I learned how to scalp crypto-currency and I do it well. I'd like to learn a new system. What do you suggest?
You should learn margin trading also. This is very helpful for a trader specially when the market is bearish. By this trading strategy, you'll be able to take profit when the market is not bullish. This is not complicated to learn, you may learn it easily either through watching a youtube tutorial or reading an article. For more questions, there are reddits, bitcointalk, etc. to help you out.
No, I disagree with your point of view. Because there are many professional traders who have been bankrupt because of margin trading. For new people, they should not learn margin trading, because their experience is not good enough to make a profit there.
They should continue to practice and experience.
The OP said that he's doing well in trading thus it sounds like he's experienced enough. Thus, we can say that he bascially has a knowledge in crypto and open to learn for new ways in trading.
No matter how knowledgeable or pro a trader is, margin trade is really a dangerous trading tool that any reasonable trader should never endeavor to risk, the risk involved is too much than the benefit of it.
Lets take a look at the Chinese man that committed suicide recently because he lost his money which is about 16 million dollars into trade, what took him to his early grave was margin trade, would we say someone who is not a pro trader will risk such amount of money without knowing how to trade professionally? If he had just traded normally without leveraging his trade, now that Bitcoin is increasing again, he would still have at least gained about 5 percent increase by now, which is also lots of money.