You can follow a curation trail to still get your curation rewards.
I don't see a trend in loss of value in POB that can keep up with the high curation rewards.
I personally try to get some "real" crypto on the hiveengine, whenever prices of POB are good and staking whenever they're not. That way I grow my stake by a lot while still siphoning a little bit of it out into swap.ETH, swap.LTC and swap.BTC .
If POB crashes I'd still have made a decent stack of crypto and if it doesn't I'm earning a lot! The curation rewards are great!