The bigger problem with your tillering setup is that you're leaving the bow drawn for ages, especially if you're getting up above it, looking at it, taking pics etc.
Ideally, you want to be drawing the bow at the same speed it will be shot at, and not leaving it there at all. Just pull, observe, release. Every second it sits there at full draw (or any length draw) it's losing power quickly, and gaining set.
Pics are great for looking at the tiller afterwards, or posting on here, but don't sacrifice a bow just to get a good shot!
All that said, finding somewhere to tiller is tricky, and we have to make do with what we get.
+1, but don't release it, relax it!!!
