RE: How often???
 

In 21 years I have never stuck an arrow into another. I have sliced fletchings and broken nocks, but never stuck one. I guess I am just lucky:D

Seriously though, shooting no more than 2 arrows at any one spot is the way to go. Only occasional damage that way.

RE: How often???
 

can we get a picture of them?

RE: How often???
 

I buy the rolls of bright orange stickers that you would typically use to sight in a gun (I think they're 3/4"- 1"and look like a roll of stamps). I put a bunch of them on my target so I'm picking smaller spots than what come standard on a block target. If you're on, you'll know it then, and you can just move over a few inches to the next sticker. I'm not a fan of ruining arrows as a reward for shooting well.