Signaling Delayed FT Violation
 

While the ball is at the disposal of the thrower during a free throw, the trail official sees a lane violation by a player on team B. It seems to me that the official should give the Delay Violation signal with the hand farther from the end line? If that's true, should she/he also continue the wrist flick count with his arm extended? Is there another way to do it?

If I'm not mistaken, he 10 second free throw count should not be a visible count. Therefore there would be no wrist flick to interfere with the delayed violation signal.

You're mistaken. The 10-second count is a <b>visible</b> wrist flick. 240(f) on p.41 of the NFHS Officials Manual.

Most of the time, the defense violates AFTER the FT release, so you could use the arm furthest from the hoop to signal the delayed violation. If it happens before the release, why couldn't you just stop the count on the release and go right into the delayed violation signal with the same arm?

Because, theoretically, you could still have a violation on the shooter for violating the 10-second rule, in which case you'd penalize both violations. (9-1-Penalties-4-b.)

Personally, I'd just stop counting, never really thought about it. Anyways I don't really count to begin with...

I stand corrected.

I hope that you are asking about 2-man officiating. :D

Count with the hand farther from the end-line. Raise that hand when the FT is in the air and be ready to chop the time. Signal the delayed violation with the other hand.

Nonvisible Count
 

I believe that the only nonvisible count is the three-second count. Please correct me if I'm wrong.

The reason you don't stop
 

If the free throw is successful, you have no violation (assuming A is shooing and B has violated the lane).

Is it true that a lane violation committed by a player on the non-shooting team (9-1-9) isn't a violation until the ball leaves the thrower's hands? If so, if the thrower commits a 10 second violation (9-1-3) that violation causes the ball to become dead so there would not be a dual violation/penalty.

??

An opponent of the shooter violating a free-throw provision/requirement/rule is a violation as soon as it occurs, provided the ball is at the shooter's disposal. If the free throw is made, the violation is ignored. - Hence the delayed dead ball signal as soon as the violation occurs - not when the ball is released for the free throw (if the one precedes the other).

I would signal with my hand towards the backcourt. I would silently continue the count with my nearer hand. If the shooter violates, he gets a re-shoot due to the delayed violation.

True for FED and NCAAM. In NCAAW, the 10-second FT count is also "non visibile", and of course, there is no 10-second bcacckurt count.