These are few things that I saw from reading your post about Jam Timers that is very useful for a new Jam Timer. When a team time out or Referee time out is done. He/She should be standing in front of pack when whistling is blown for them to return to the Pivot line. Also, for those that are standing there not to take off.
+1
I've seen both the front IPR and the Jam Timer put themselves in front of the pack like this. I like to make a verbal indication to the pack that the whistle will be a "this is the end of the timeout, NOT a jam start!". There are times where even if you're 5 feet in front of the pack, hands doing the OTO signal, they make eye contact, all that jazz, and then WHAM you get assaulted by 8 rollergirls when that whistle goes off.
When the first whistle is blown to start the jam and Referee calls NO PACK immediately blow the 2 whistle to start the jammers. This is something that I learned when I first started doing Jam Timer. Being a Jam Timer is a very important role in a bout. This position can make or break a bout if not done correctly. Knowing pack definition is key for this postion.
+1 again. One of my biggest pet peeves is when either a No Pack situation occurs or the defined pack has left the line (with a few stragglers hanging back) and the Jam Timer just hangs out waiting for the last skater to cross the line. Rules say when the last pack skater has crossed the line...
Also, note that the first jam whistle isn't a quick TWEET. It's a LONG TWEET. (Thank you, Ref Clinic East)
One of the biggest mistakes that New Jam Timers do is start the jam without the head referee being ready or in position. Always check with the head referee before yelling 5 seconds or jam starts on this whistle before blowing the whistle to make sure everything is set and ready to go. Hope this information is helpful for your new jam timer.
This is something good to give a seconds' attention to during the pre-bout ref meeting (if you have NSOs in on it, I like to bring 'em in) or have the Head Ref pull the Jam Timer aside for a minute before the bout starts.
Final thing I have to say is blow the whistle like your trying to take the buildings roof off that way there in no confusion if the jam has started or not. Be a little curtious if your just having a scrimmage in a small building with no crowd though! Good luck to ya....
That's why I always recommend people to get Fox 40 Sonik / Sonik Blasts instead of the classy Fox 40. Those little f'ers are LOUD even with a screaming, packed crowd around you.