set position with nobody on

Tom,
    To me why create problems , I agree with you I have nothing. Technically I suppose we have an illegal pitch that would be a ball , but would a coach call you on that? Is anyone looking for that under these circumstances ? Something to think about, can't wait to see more ideas on this.
                  Larry Loeffler  

I have nothing on this when no runner(s) are on base.  A discernable stop when delivering to the plate with a runner(s) on base is required or its a balk.  What is the difference if your winding up and throwing  not stopping or throwing from a set position look and not stopping. Quick pitch is when the batter is not ready for the delivery of the pitch and that becomes illegal.

PENALTY (ART. 1. 2. 3) 'The ball is dead immediately when an illegal pitch occurs.  If there is no runner, a ball is awarded the batter.  If there is a runner such illegal act is a balk.  In both situations, the umpire signals dead ball' I guess we are taking upon ourself to overlook a portion of  a rule we don't agree with.  Maybe the best solution to this rule is to go for a rule change like when no runner(s) on declare illegal pitch,with delayed dead ball.(signal)  Let the pitch be thrown, if batted, batter-runner gets a hit, play on,  If not  ball award to the batter.   (Rule change takes a long time to come by)

In all cases we cannot ignore the fact that the pitcher is committing an illegal pitch by rule.   You could inform the coach and the pitcher to quit pitching from the set position if he is not conforming to the rule. 

The Penalty for no stop with no runner on (NFHS 6-1-3) is a ball and the ball is dead.  Plainly stated. Official Rule of Baseball Section 8.01 (b)  penalizes with a "ball" call,  but the pitch remains alive - if the batter reaches first in any manner, the infraction is ignored.  The obvious difference is that the high school rule kills the ball, the pro rule does not.

I, for only one, do not like to pick and choose which rules I will enforce and those I don't.   Failure to enforce the rule is deceptive to the batter - he won't know whether the pitcher is going to commence a pitch prefaced by a stop, or not.  Therefore, every pitch is a new scenario, and the hitter does not know if the pitcher is going to stop or bounce or what.  Advantage to the pitcher, which is probably the basis for the existence of the rules requiring a stop, runners or not.

I will enforce 6-1-3 until  NFHS rules tell me otherwise, or NCOA issues policy that we ignore it with no runners on.  Perhaps, someday in our lifetimes, NFHS will change the rule to one consistent with the Official Rules, but maybe not :-) .