IMHO, it's not necessary to bring the aimer to the exact distance - the direction is important. I prefer long target distances to shortish ones because the latter have caused a few errant shots for me.
CrowCanyon0: rying to sell a bug as a feature is the oldest trick in the programmers book.
Since only users have replied here, it's rather tips for user's workarounds which have been provided. These have become very popular for company answers, too!