To me this feels like speculation on top of speculation, or maybe it could be called leverage. However in terms of trading, which you are effectively doing by renting your bitcoin out, then it might help you to get a long term return from this rather stationary asset. However you always have to look for the downsides or negatives in such trades. If you really think that bitcoin has a bright future then (depending on how long you think it will take to achieve) you might not want to set up a contract where someone can take it away from you if it reaches a certain price. That's how these deals tend to work, people have the option to take them from you if it reaches a presently unrealistic price point.