Looking at Deribit, in order to get 10% premium for March 26 calls you need to sell at $60k strike, meaning that if in 1 month BTC goes up by anything over 7% you'll loose some of your BTC (or as you claim "miss out on some capital gains"). Now you just have to do it consistently every month, and hope Deribit doesn't go the way of Gox.
If you do this with the whole stash, then you better use even more advanced strategies using futures, etc.
planbB (or preston pysh?) is saying that hedgies are on the hook for 1.5 bil already selling futures and buying same amount of spot btc, of vice versa, I don't recall.
Apparently, it is 20% yearly return with practically no risk. It is caused by a significant contango in btc futures..
The futures strategy is no risk because it is a perfect hedge. Easily done through CBOE and CME as well. If anyone has a bunch of fiat not doing anything that they want to generate a yield on, this is a great strategy.