Wall street does it so yeah it's definitely possible but if you don't have a credit score you don't get loans anyway. Best way is using some BTC as collateral to borrow money from an exchange. Buy BTC with it (2x, 3x) then pay it back whenever you feel like it. Odds of being liquidated on that margin are minimal. If you were to put 1k on an exchange to borrow 2k after a bounce BTC would have to drop into the 60k range before you get called.