I have been selling credit spreads on SPX and XPS for about 4 months now. 45 DTE usually buying delta in the low to mid 20's. I have been trying to pick support levels and watch the RSI and MACD to better my odds when choosing calls or puts. It worked really great for awhile but I switched to calls based on those indicators and if you were to examine where the RSI became oversold and still is !! you will see that I made the wrong call, so to speak. I was just wondering for others out there that are selling spx options what criteria do you use to enter a trade. Do use indicators? Do you sell calls and puts or just puts? Do you never look at anything just sell based on delta and cash in and out based on percentage?