Like its been said above for those of you trying to become proficient at a certain yardage,, I regretfully avoided deer hunting for 2 years because I felt I wasn't good enough,,,,,, shooting 3D's that had targets set up by compound shooters (work details) that where too far I judged myself on those distances..
never again,,,,,,, listen if you are only good at 10yds or maybe 15yds then you go and set up your ground spot or even treestand so you only have a 10 or 15yd shot,,,, find the spot in the field that caters to your comfort distance or learn self discipline..
keep in mind every traditional bowhunter needs to have discipline where we ALL should know our max distance and we ALL have to just watch game out of range( a good time to practice with a grunt turning them back to you)
so shooting 10 or 15yds and not allowing yourself to shoot any further is just something you will need to learn to do anyway,,,,,a person who takes Hale Mary shots at animals too far beyond their comfort zone is called a slob hunter.
my max shot is 25yds but I watch the animals actions and will only take that if they are not coming closer,, I prefer and will wait out the deer for a 10 or 15yd shot...
for practice I highly recommend adding another 5yds of practice distance to your distance goal so if you want to be able to shoot 20,, ((some quota hunts require a 20yd proficiency test here we even need to use broadheads))
so practice shooting 25yds for a comfort zone of 20 and so on,, always add 5yds.