The best investment method i think is trading. But you must know about market price before you try it. You can hold your BTC for several weeks or months than you look market price. The other way is altcoin trading. It's faster than BTC trading, but it has high risk, so i don't recommend it. The last thing i want you to know, be careful when you choose trading site or you'll lose your BTC 
trading plus leverage i would, say, it would allow you to have great return with a little investments, it's the best if you know what you are doing when trading, if you are inexperienced in that sector, you can still use leverage with a even lower amout
leverage should work especially now , seeing how the price is repeating the same cycle of 230-250 in loop since many weeks, so you have a easy path to follow