You're correct in the case of selling a covered call, which is what I did.
This seems too good to be true. Why don't you just borrow money on your credit cards at 21%, buy bitcoins, lend them out and get a guaranteed 72%?
It's not a guaranteed 72% unless bitcoins are worth what you paid for them before the option expires.
I wish someone would starting writing puts come on pumpers put your money where your mouth is
Bitcoins are already worth more than double what I paid for them. I'd rent them to you if I could be reasonably certain I'd get paid back with interest. I just don't understand the best way to do that or if it's possible.