i just enter on the next breakout bar. Once again the stop is placed below that bar. Yes I sometimes get chopped a few times but if the breakout is good then the rewards far outweigh the small losses.
#3, but not a stoploss with a figure, which in a gap situation might be easily reached with the price bouncing back and loosing all or some of the accumulated the profits. Instead of a certain figure I use an Exit EA (in Metatrader) based on MA of an adaptive RSI and an ATR. This produces a belated exit but in many cases safes the profits. At the same time this indicator is the signal (among other conditions) to enter a new trade in the counter direction.
I trade breakouts the same way including stop placement. I will sometimes drop down to a lower timeframe to find the optimum point to enter the failed breakout. That reduces my risk considerably.
To understand where to place stops one needs to understand structure of the market. Then you can get a stop in nice and tight with low risk of being hit, and at the same time giving maximum reward to risk.
%% Great question. It may have started, in the Smoot- HawleyTariff[tax]-insane leverage bear market of 1929. NOT a prediction;200 period moving average can help.