Bollinger Bands are the most statistically based. The strategy works most of the time except during waves #3, and #5 when there isn't enough mean reversion. But there are synthetic strategies to play momentum during Waves 3, and 5. You just roll your short leg from OTM to ATM or even ITM and then you roll long leg from ITM to ATM.
I don't have any exotics. I tracked/wrecked one. I've had an Icon and a 22B, but I drive EVs. I drive a Model S and wife drives a RAV4 Prime. I have a built 2016 STi with 550 at the wheel. Cosworth long block -> dogbox 6SP.
So a combo at 55/45 delta loses it's convexity? You haven't the slightest clue what you're mumbling about.