I got hard time to have my strong eye on left eye because of some disability of my right eye after a serious surgery. being a right hand bowler, my target is always inconsistent, especially in my spare shot, I have tried a lot of method such as add target board, more veritcal balance..etc. sometime it is useful but sometime not, it is especially when I cannot concentrate myself in league paly after work by distraction.
for those who have same problem as me, please share me your experience. please don't mind my silly question because I really suffer for that from after my surgery in these years. I have read a lot of tips even ron' stuffs but I still cannot slove my problem.