4T2 posted:11U (little league), my son used the small-barrel Mako (-11)and crushed. Went to 13U Travel the following year (played up), used a -8 Combat Portent. He loved that bat, and I can honestly say it out-performed other bats he used. Could easily have been a confidence factor, as the other major bat brands also have good stuff. 14U he went to the -5 Combat Portent for summer. Worked with wood in practice both seasons, switched to -3 BBCOR DeMarini Insane after the 14U summer season along with the wood (so, all winter), entered high school swinging it just fine (led his team in most offensive categories, had more XBH than singles with a .417 average). The -11, -8, -5, -3 progression (3oz per season, basically) worked out just fine--but he put in significant work in the offseason with the next-level bat so that he would be ready for the next year. If a kid is willing (and able) to put the work in during the offseason to be ready for the heavier bat the following year, I don't see the advantage to going through that adjustment period on the field. Learn/work in the cage, perform/play in the field.
Just my opinion, of course.
-42
42 - If your son was playing up then he was swinging a -8 at the age of 12; -5 at the age of 13 but practicing with -3; at the age of 14 he was -3 full time. Am I getting that correct?