In case you don't find a suitable match, below are some links to videos that might be beneficial if you haven't already seen them.
Target Pulling Parts 1-3: Jonathan Ocab does a pretty good job covering everything in these videos. The targets used are for Highpower, but only the ring sizes differ. Everything else is the basically same.
Some other items worth (re) mention:
1) Shotmarker disc goes white side out when placed over the aiming black portion of the target; black side out when placed over the light part of the target (target perimeter/outside edge). Be sure to use the correct size shotmarker for F-Class, which are generally smaller diameter than those used for Highpower.
2) Wait/watch for dirt splash in back berm before pulling target down. It is VERY easy to become distracted and look away.
Resist the temptation to do this, as your performance in the pits can adversely affect the shooter's score.
3) I use the following cadence: pull shotmarker disc, tape over
old bullet hole, put shotmarker spindle into
new bullet hole, move scoring disc into [correct] position.
Other variations on this cadence can work, but you want to do it the same way every time. It will become muscle memory in short order.
4) I like to pull bullet hole tape strips/stickers and put them onto the appropriate crossbar below the target so I can grab a new one and stick on the end of my left index finger ready so it is to go before can slow the pit service down noticeably, especially if the stickers are old and hard to peel. Either way, you can count a certain number out to cover sighters and shots for record so you have some idea when the shooter is finished. Doing that is somewhat of a guess during
unlimited sighter matches.
5) Have at least a couple or three scoring disks at hand and ready to go. Spindles will get shot out periodically, requiring a new spotting disc assembly. DO NOT get off the catwalk to try and grab a shotmarker that has been blown out. Leave it and get a new one.
6) If the bullet hole even barely touches the scoring ring, the shooter gets the higher score. If there is any question at all in my mind of whether the bullet hole touched the ring, the shooter gets the higher score.
7) Check the target face carefully before the string of fire starts. Cover any holes with tape that have not previously been covered, and make sure the appearance of the target face is good before the string of fire starts. It is the target pullers' and scorers' jobs to facilitate quick and accurate scoring for the shooter so the shooter can concentrate 100% on shooting the best score they are capable of.
8) When scoring next to the shooter at the firing line (i.e. recording the shooter's score), if the target fails to go down it is your job to call for a pull. Likewise, if the target comes up marked with a scoring disc that does
not match the value of the shotmarker disc, it is the scorer's job to have the line official call down for a re-disc of the target. If everyone pulls targets and scores as they would want done for themselves, everything will work out better.
I wouldn't stress too much about pulling targets. It is clear you are conscientious about the pit duty and I'm sure you will do very well at it in short order. I think you will find that the pullers on either side of you can help with questions, so you are not alone. It wouldn't be unheard of that the range officials hold an target pulling/scoring orientation of sort prior to the match as well. If they do, try to attend it.