[pzhon]

You frequently compare apples and oranges. That is a way to make or rationalize bad decisions.

If you play with the same advantage over your opponents at all times, any stop-loss or stop-win system you make that decreases the hours you play will decrease your expected profit.

Suppose you expect to win $100/day. That comes from winning much more than $100 on some days, and winning much less or losing on other days. Then you decide that you will quit when you hit $100. What will happen? You have given up the times you win $400 in a day. On many days, you will hit $100 and quit. On other days, you will never reach $100. On some days, you will lose. Because of your new system, you will average less than $100.