Bear with me. I paper tuned my arrows, bareshaft tuned them. Decided they needed 125 more grains up front. Fully intending to add the weight, I took my bow to the pro shop with my points. I told the guy my findings. He had me shoot my different points, then he shot my bow with the points too (he's a recurve guy). As a final check we watched each other's arrow flight. With 125 more grains, the tips started to come down right before hitting the target, ever so slightly. With 100 grains more, they were perfect lasers. He said I could go with 125 more grains as they were okay and probably hit pig hard, but he said that 100 grains was probably best.
I told him about stuff I was reading on forums and that it seemed more weight up front was key to arrow flight, and it seemed the proper course of action for me.
Then he said something I didn't expect him to say. He said some people know how to use heavy weight, but some people put on more weight, and mask their poor form, covering up mistakes.
Wow. So now I guess my viewpoint of adding weight is, it depends "and" it's not always the best course of action. I went with 100 grains.