im suprised you havent got a reply yet on this.I use them on and
off and yes there very effective.I usually use a close grip to and they
seem to help my tris get bigger and stronger everytime.Just start light
cuz it takes a couple times before you get used to it and have a spotter
to.
I've never used them for tris. I've used a very wide grip as a "shoulder saver" method for benching. Oddly enough, the most stress I felt was in my outside delts.
Follow MESO-Rx