Say, you have $10,000 and would like to open a position worth $30,000. Not an issue, you will have to trade with x3 leverage. But always take into account that every price movement will be multiplicated by 3 meaning that if the BTC price is $30K, and it drops by $1K, you will earn $3K if you hold a short (sell) position, or lose $3K if your position is long (buy).