As a long time centerfire bench rest shooter from 100 to 1000 yards I will add some things I have learned shooting over flags for 30 plus years. #1 Always shoot over flags. Testing, practicing, competing, whatever, flags always. #2 Bench Manners, How you set up your rest and bags plus handle the gun. Flags won't cover for poor bench manners. #3 I like to stagger the flags low to higher in a slight curve starting close to the bench curving out then back into the target. 3 flags for 50 and 4 for 100. You can only process so much information. # 4 I have arrived at a match with the wrong or no ammo and/or gun. I have had the wrong rest or bags. But I have never forgot my flags or my timer. #5 The flags will become lost in the nagging fear of running out of time if you don't know the time. If your afraid of running out of time and shoot by guessing at the wrong condition.....you lose. # 6 When you go to the line to shoot you should have an idea of what the prevailing condition is from watching your flags before hand instead of just standing around b.s.ing and collecting dust.#7 Ok you have flags and a clock. You should begin by figuring out how long your condition holds, can you get off more than one shot, and how long till it returns these are often very repeatable.#8 Don't try to shoot in a reverse condition unless your going to be out of time. During warmups take a couple shots in the reverse so if you must shoot it you have an idea where to hold. #9 If possible keep flags close to the line of flight path. #10 Always have the same weight of ribbon on all flags. I like cold weather flagging tape. Sailtails are too heavy and regular flagging tape to light for my taste.#11 Although you normally try to space flags evenly any obstacle in or close such as a bush, shooting over a berm.....deserves a flag. # 12 I personally Don't like over sensitive flags that are always twitching, although basically flags should be balanced sometimes an extra couple inches of tail will calm them down.#13 I change colors depending on the time of year and location. It's called spray paint. In the centerfire game many try to make it about the gun. I call b.s. He who reads the conditions correctly with a properly tuned gun and ammunition wins. Hope this helps.