Tiller Tuning for a steady aim

I first heard of this method from watching some tuning video's that American archery legend "Frank Pearson" put out in the early 1990's.... what it showed was Frank with 9 paper plates all with an aiming spot in the middle but each plate was marked with a different tiller measurement... such as 1/4 top, 1/2 top, 3/4 top, 1 full top, even, 1/4 bottom, 1/2 bottom, 3/4 bottom and 1 full bottom... now what this means is that he would start with an even tiller setting and shooting at a comfortable distance (normally 50mtrs) and shoot 6 -8 arrows, aiming and hitting the plate would give him a plot of what the group looked like, he would then put up the next plate... lets say 1/4 top, then add a 1/4 turn to the top limb and shoot at the plate again for another end to get his plot.... he would continue this all the way through both top and bottom adding 1/4 turn each time until he found where it all worked best for him. (Please note that each change in tiller will result in a change in the nock point, so you need to reset nock point and peep sight after each change.)

Although the video showed and based its results on group size and consistency and not purely aiming, it did show improvement with shooting in using this method.

I use this method only to find a steadier aim, no shooting required... I just set up a small aiming spot in the house and then play with moving the tiller. I dont know why, but I have always found that the bow aims better with somewhere between 1/2 and 1 full turn on the bottom limb.

Shoot well