If you need to grow bitcoin i suggest not to put it on any investment sites now because it's very tempting to them to turn to scam because the price of bitcoin is continue rising. So i were you i will just increase my bitcoins by signature campaigns.
What the relationship of the price btc is rising and the investment place to be a scam?if your means about the value will be more caused by the rising i can say no for that, because the scammer are not cares about that.
If a investment site offers you to double your bitcoin in a year, it is probably a scam. No real investment can be that high.