You hinted on it with USDT and you should really look in to it some more, in theory it is pegged to USD. If you foresee a crash coming you sell up for USDT and then either buy back later or sell your USD for USDT. It's not an exact peg and sometimes the price goes to about .98 to the dollar but it's pretty close.
Thanks, So, I would do this to basically keep my money in the markets and avoid xfer and withdrawal fees to jump ship?
You now have bitcoin derivatives, so you can actually assume just the level of risk that you want, and pay a price for transfering the rest. I think that some of those derivatives can be bought with not much money.
I'm not a financial guru by any means, but futures and derivatives scare me, not so much for me individually, but for the market itself - housing bubble comes to mind...