It really depends on how long and straight you're talking. I mean, if you can't hit a ball 50 yards and it goes into the shrubs, sure that would help. Your putting can't be nearly as bad as that. But, if you are talking only a few yards in distance, and really negligible disparity in stroke count to the green, go with the long putting. It's much more difficult to master, it takes the right eye, and it will definitely lead to lower scores if you can finish things off nicely.