Depends on what you need to do. There are many good options. Firefish.io is Bitcoin-native, or you can open long future position, that is also a loan. I don't pay back the loan. When interest rate is lower than inflation and when Bitcoin's upside potential is higher, it does not make sense, I just have an open credit line. I can pay it back any time, so no stress from the loan.

How to harness the value of Bitcoin without having to sell it (ebook, mini-course) – Hack Yourself!

How to harness the value of Bitcoin without having to sell it: A path to your orange citadel and a way to short fiat currencies (Paperback) – Hack Yourself!