What if it went to 1.39R & reverted back from there? Would you stay until it hits 1R SL, or exit with a minor profit or minor loss with Trailing-SL being hit? Personally, I think a rabbit in hand is worth two in the bushes, so I like to set my TP at 1R, & if it gets very close to it without quickly hitting my TP, then I'm happy to exit rather than HOPING that it will go to 2,3,4,5 or whatever R's & potentially give up what I've already gained because prices rarely move in a straight line, so it's highly likely that it'll take out my SL or TSL before it goes up so many R's.
Many traders tend to focus too much on trades which went 10R in profit after they exited but manage to ignore the occasions when it would've gone 20R against their position after they exited a particular position. Always looking (HOPING) for big trending trades is like trying to score ONLY in sixes & fours whereas it is much easier & less risky to build a solid innings by taking regular singles & two's; of course, the best thing would be to hit sixes & fours AND score singles & two's depending on how opportunities present themselves but that might require a master-batsman like Smart_trade but most of us aren't that good, so I'm happy with frequent singles rather than going for the big shots.
At the end of the day, a trader has to do what works for him, & of course, different things work for different traders.
I know, the question is for Veeramuthu JJ but I couldn't resist the temptation to reply since I also use fixed TP for my trades. I hope you don't mind.