Taki27 I use backweights in many of my clubs. I always felt the backweight helped limit my OTT move, but it may just be that the total static weight suits me better. I started using it in my 5, 6 and 7 irons years ago and it made a big difference so I started adding them to the hybrids, fairways and driver. I generally get them from Value Golf or Golfworks. I try to re-use them, but it is easy to forget they are there.
The fitter I've used feels it's the total weight helping, but I find if I MOI match the irons and then add backweights that increase as the club gets longer I do hit them better and we did prove that on the launch monitor. Instead of my 6 iron being about 25g lighter than my 9 iron it's maybe 10-15g lighter. I probably need to re-do my current set because I went lighter and I'm struggling......of course I'm always struggling any way lol.
