Long and Short strangle

Usually the short strangle seems profitable up-to 5-7 points intraday. I observed for 2 weeks doing a paper trading.
Which means in a month after brokerage and taxes i am still able to make about 5-7% on the capital with a safety cushion.
Would you disagree on this concept ?

Secondly, in case of large market movements (unexpected) will a combination of long and short strangle work in any case ? Maybe at different strike prices. If i consider the ATM+3 ex 11200CE and 10800 PE for Short strangle, I cannot consider the same for long Strangle :slight_smile: So which kind of Strike price selection would help here.
Have any1 tried them ? Please let me know what are your thoughts?