Re vxo versus buys. In theory a very low vxo number could negate a buy but I have never a market that couldn't go higher on a low vxo reading. Euphoria can last way longer than commons sense.
I've gotten huge value out of high vxo but little out of low.
You CAN time the market!
But only after you trash the big 3 myths.
Myth 1 - its possible to get every point of every move ...Myth 2 - you'll never have a drawdown ......Myth 3 - you'll never have a loss