Well I had to try the supposed gimmick and ordered some FOBs. Got them in the mail today and immediately stripped some fletchings on two arrows one 55/75 at 27 1/2" and a 75/95 at 29" with 100gr fps. I didn't clean the wraps off just to see what they would do with ragged edges from where I removed the blazers. Now granted I am only shooting them at 15 yds the max I can get i the basement. After shooting two fletched same type arrows I then followed up with the FOBs and I could cover thrree of the four with a quarter and all four with a fifty cent piece consistently after five rounds of shooting them. To say I need to replace some nocks is an understatement. So far no bhs or long distance but then again most of my hunting shots are less than 25yds. Will continue the testing but so far there is no difference in POI and I did not change my D-loop position to accomondate for either arrow but I must say the loop is just about shot up ffrom all this shooting I'vve been doing but the strings are holding up great. Big thanks to Double S for getting me to try them. So far nothing to not like about them.