Early on, I was shooting for 4:1 or 5:1. It did work, but the losing streaks (in low win rate systems) are just not for me. Plus, after losing 10 or 15 in a row, if I missed a winner for whatever reason, would have a meltdown.
Same. my current method is not the most profitable, but I can execute the strat with very few mistakes, it fits my personality and attention span, and I'm satisfied with the results. There's so many variables one can play with, but if they can't execute (and especially when volatility picks up like it did this morning), things will quickly fall apart.
I stop at 15:30 ET unless I'm in a trade, then I ride it out til completion. No new entries after 15:30. On Fed days, I close up at 13:30. I take any/all sigs. I don't care if I lose 3,4,5 or any amount in a row, in a single day or over multiple days. There's been days where I lose the first 3 or 4 and win the next 4 or 5. If it's valid, I'm in. 50% win rate and losing streaks are expected. Sometimes they occur in a single day, or over multiple days.
The other days I probably won't trade (or reduce to 1/2 size), is when the prior day RTH range, avg 3 day RTH range, and avg 5 day RTH range (for my instrument), all drop below a certain threshold. If the market isn't moving my win rate drops and I don't enjoy it.