At that distance, it can be difficult to get a perfect hit with a bare shaft. Here's and easy way to experiment. Initially, leave your rest and nocking point alone. First, mark your limb bolts so you can easily return to the exact original position. Then, get a notebook to record what you're doing. It can be confusing after making several adjustments. Increase draw weight a bit, and record what happens. Do this a couple more times. If it corrects the flight, great. If not, then decrease draw weight and record what happens. If playing with draw weight doesn't work, then move on to tiller.

Try experimenting with tiller using 1/4 turns on one limb bolt at a time. If they're both maxed out, then decrease one first, then return it and decrease the other.

After playing with these easy adjustments. If nothing is corrected, then return to original settings and then turn to the rest. Make very small adjustments (mark your original position first). It's easy to return to the orginal position if it doesn't improve flight, so don't worry about experimentation. Try moving left and right and record what happens.

In my opinion, bare shaft tuning is best used to determine correct spine. I prefer group tuning to determine exact rest and nocking point position. I seldon bareshaft tune anymore because I've learned what particular shafts like in the way of draw weight at my arrow parameters. In addition to that, I usually shoot over-spinned shafts because I believe that helps eliminate the effects of the variation in spine between individual shafts. When I bareshaft tune, I add masking tape to the fletching area, to compensate for the weight of the vanes. It's easy to measure it on a grain scale and then you always know about how many inches of masking tape it takes to compensate for particular types of fletching. I also recommend turning the nock to several positions on the bare shaft and shoot to see that it flies the same in each position. If you're not using a good arrow to test with, the results could hurt more than they help.

I think everyone should experiment with bareshaft tuning. It will be eye-opening to see the affects of changing draw weight on under-spined or bordeline spined shafts. You'll learn why spine can be so important. It's enlightening to see affects of a small turn on the limb bolts.