"You can run" or "Spot"

Ditto.

Designated Spot ...
 

I might have let the inbounder get to the end of the "C" on the floor. Once he got past the "C", then violation was easy to call.

Nice video JRutledge. Thanks for sharing.

Two Options ...
 

IAABO mechanics have us state, and signal, "designated" spot, or, "you can run", on all backcourt endline throwins.

How about NFHS mechanics?

Who cares, mechanics are guides for the most part anyway. I do not know of anyone that says a specific thing or does not say a specific thing in this or any number of situations.

Peace

IAABO, One Rule, One Interpretation, One Mechanic ...
 

1) I believe that you have stated on a few occasions that you, and your local colleagues, have your own local set of mechanics guidelines (are they, at least, written down?), and that you do not follow any national guidelines such as NFHS, or IAABO. And that's fine, "When in Rome".

2) Many of us do follow national, written, guidelines. I followed NFHS mechanics for the first half of my career, and now I follow IAABO mechanics. I care because 20% of my peer rating is based on following our written IAABO mechanics. I follow them because my peer rating directly effects my board ranking, and I like to get assigned lots of high level, varsity, games. So. Who cares? I care. And all 325 of my local colleagues care. And my assignment commissioner cares.

There is a mechanic for a designated spot throw-in (just point at the spot), but I don't see one for being able to run the line. I know we kind of raise our arm so the elbow is at shoulder height, then waive or hand side to side along the end-line.

When it comes to communicating, I rarely reference the manual. Common sense often guides me.

BTW, this would've been even easier to call on an NBA court or in an NCAAW game because of the tick marks on the floor for the Lower Defensive Box. Those marks are three feet outside the FT lane line. If the spot = the tick mark and you cross the lane line...whistle.

JMF, the call was easy w/o tick marks.

I would have a whistle a bit sooner; when the player got over half-way to the lane line:)

I *think* #28 used to be used for both -- either by pointing or by moving the hand.