I imagine the document may change between now and winter, but here are the important provisions for Michigan as of the moment:
There's three different categories of precautions:
Permitted - Completely voluntary.
Suggested - Best practices that should be followed, but not required
Mandated - Required. Officials unwilling or unable to do these cannot officiate.
From your list of items:
Electronic Whistles - Permitted
Masks/Shields - Suggested
Whistle Pouches - Not mentioned, presumably permitted.
Other items:
Permitted - Gloves.
Suggested - Temperature check on game days, BYO beverage, frequent use of hand sanitizer, sanitizing hands after inspecting/touching equipment.
Mandated
- Arrive dressed in uniform. Putting on the striped shirt after arrival on site is acceptable. Jackets are not required for pregame warmups.
- Arrive at a single location and time when possible. (aside: good luck with this)
- Physically distance during the pregame conference.
- No pregame handshakes, etc with other participants.
- No contact with players.
- Physically distancing during conferences with partners. If that's not possible, avoid direct face to face conversation.
- Only referee and head coaches attend pregame meeting at center circle. (Aside: With the center circle's 6' radius, this is a good idea)
- Only the referee meets with the table before the game.
- Officials will not handle basketballs. Players are to retrieve balls that get away from the court area. players will be instructed to leave the basketball on the floor where the next possession will be during timeouts.
Rule/Mechanic Changes:
- Players may use cloth face coverings without color restrictions.
- Players may wear gloves.
- Players may wear long sleeved shirts subject to existing color restrictions.
- Only the home score/timer are permitted at the table. All others are considered non-essential and must sit elsewhere.
- No jump balls. Visiting team starts the game with a throw-in at the division line with home team getting the next arrow. Overtimes use a coin toss to determine possession and arrow.
- Optionally (to be communicated with head coaches if using), Officials will not handle the ball for throw-ins. They will instruct players where the designated spot is (as appropriate) and that the five second count begins when the administering official backs away. For free throws, the lead stands at the end line under the basket and instructs the free-thrower that the count begins when the official back away,
Also, officials are
not responsible for teams'/administration's adherence to social distancing, sanitizing, etc. That responsibility lies with coaches and school personnel as appropriate.
Finally, games cancelled due to COVID are deemed cancelled due to an act of God and not subject to a 10-day advance notice. Officials will not be subject to failure to fulfill a contract if they can't officiate because they've been diagnosed with COVID, or a confirmed case of COVID occurs with a team or facility which/where they are schedule to officiate