You guys are nuts! I'm sure Riskarb is turning over in his cyber-grave 
Unless I mis-read, I understand one suggestion is to go short straddle into earnings? IV gets pumped up going into earnings. It's preferable to be long straddle (or other long time VEGA) into earnings. Offset position just before report. Gamma scalp for additional gains.
There is no edge on a combo to fly conversion going into earnings!
If you're going short the combo, best to initiate position at last possible moment to capture peak IV. Short straddle before report is not for the faint of heart and is tantamount to gambling in many respects. Need to be ready to hedge with (liquid) underlying after hours with minimal delay. Best to have a decent news service on hand. Playing hedgeless will leave you eating like a chicken but shitting like an elephant...much like FOTM credit spreads IMO.
Skew and expiration cycle permitting, (ratioed) time spreads offer the best risk/reward IMO.
Either:
1) Long the time spread for a cheap OTM bet. It's "cheap" due to the tenor skew.
2) Short the time spread (short VEGA) to capitalize on the volatility crush.
Those with market maker haircut have a massive advantage on the short time spreads. More so when ratioed.
2 cents.
MoMoney.

Unless I mis-read, I understand one suggestion is to go short straddle into earnings? IV gets pumped up going into earnings. It's preferable to be long straddle (or other long time VEGA) into earnings. Offset position just before report. Gamma scalp for additional gains.
There is no edge on a combo to fly conversion going into earnings!
If you're going short the combo, best to initiate position at last possible moment to capture peak IV. Short straddle before report is not for the faint of heart and is tantamount to gambling in many respects. Need to be ready to hedge with (liquid) underlying after hours with minimal delay. Best to have a decent news service on hand. Playing hedgeless will leave you eating like a chicken but shitting like an elephant...much like FOTM credit spreads IMO.
Skew and expiration cycle permitting, (ratioed) time spreads offer the best risk/reward IMO.
Either:
1) Long the time spread for a cheap OTM bet. It's "cheap" due to the tenor skew.
2) Short the time spread (short VEGA) to capitalize on the volatility crush.
Those with market maker haircut have a massive advantage on the short time spreads. More so when ratioed.
2 cents.
MoMoney.
.